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Summary of Special Engage Session on “Remote Sensing and the Future of Earth Observations”

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Summary of Special Engage Session on “Remote Sensing and the Future of Earth Observations”

Introduction

On October 16, 2024, a special session of the NASA Goddard Engage series took place in the Goett Auditorium (Building 3) at NASA’s Goddard Space Flight Center (GSFC). The Engage series is intended to explain work at GSFC in an immersive and nontechnical setting. GSFC’s Office of Communications, Earth Sciences Division, and Scientific Colloquium organized this special session.

The featured speaker for this event was The Honorable Al Gore [former Vice President of the U.S.], who has a long history of advocating for the environment and raising public awareness of the worsening “climate crisis” – having received the Nobel Peace Prize for his efforts.

The event also featured a panel discussion called “Remote Sensing and the Future of Earth Observations.” Three distinguished scientists spoke about what drew their interest in Earth science and responded to questions from the moderator and the in-person and online audience.

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Editor’s Note: This is not intended to be a comprehensive review of all NASA’s future plans regarding Earth Remote Sensing. Rather the panelists focused on some specific activities on which they had expertise that was intended to give a sense of the full suite of activities planned for the coming decade.

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While The Earth Observer typically does not usually report on Center-specific events, the newsletter makes an exception for this event because the former Vice President participated – and because the topic of the panel discussion is directly relevant to this publications’ wider audience. The remainder of this article summarizes the Engage session, including Gore’s remarks, the panel discussion, and the question-and-answer (Q&A) session that followed. A YouTube video of the full event is available for viewing.

Opening Remarks

Dalia Kirschbaum [GSFC—Director of Earth Sciences Division] welcomed the participants – both in-person and virtual. Casey Swails [NASA Headquarters—Deputy Associate Administrator] continued by thanking Gore for being one of most influential voices in the U.S. on climate . She said that Gore’s words and actions have inspired much more than just the Deep Space Climate Observatory (DSCOVR) mission. NASA – and GSFC in particular – has been conducting environmental studies since its beginning. She named historical missions, such as Vanguard, the Television Infrared Observation Satellite (TIROS), Landsat (partnership with U.S. Geological Service), and the Earth Observing System (EOS) – including more than 20 years of observations from the three Flagship Missions: Terra, Aqua, and Aura. (The Earth Observer’s Archives Page includes a “Bibliography of Articles with Historical Content” in which links to articles written on most of the missions mentioned in the previous sentence can be found.)

Swails pointed out that GSFC is home to the largest population of Earth Scientists who produce more than 400 journal articles each year.

“It will be you and your successors who will also make NASA (GSFC) the future of Earth observations,” said Swails. “You are continuing to accelerate core science research and enable action through the newly established Earth System Observatory project office, the Greenhouse Gas (GHG) project office, and new flagship missions, such as the Atmospheric Observing System (AOS) and Landsat Next.”

On behalf of – at the time of the meeting – NASA Administrator Bill Nelson, Swails thanked Gore for participating in the Engage event, and she thanked all the scientists and engineers – past and present – that have led the way in making NASA (GSFC) a leader in Earth observations for more than six decades.

Featured Speaker: The Honorable Al Gore

Kirschbaum then introduced Al Gore – shown in Photo 1 – whom she described as an environmental advocate and a central figure in advancing public discourse on climate and sustainability. Following Gore’s many years of political service, he confronted the world with “An Inconvenient Truth,” a documentary on climate change that helped raise global awareness of the worsening state of Earth’s climate. For these efforts, Gore received the Nobel Peace Prize on October 12, 2007.

Engage photo 1
Photo 1. Former U.S. Vice President Al Gore was the featured speaker at the Engage session on October 16, 2024. In addition to overall discussion of NASA’s Earth observing fleet and how Earth observations are used to investigate Earth’s changing climate, Gore’s remarks included reminiscences about his involvement in the Triana mission, which NASA canceled, then later revived and revised becoming known as DSCOVR – a NASA–NOAA partnership. See related article, “Summary of the 10th DSCOVR EPIC and NISTAR Science Team Meeting,” to learn more about DSCOVR and its scientific achievements over a decade in space.
Photo credit: Travis Wohlrab [NASA’s Goddard Space Flight Center (GSFC)]

Kirschbaum continued that Gore played a pivotal role in inspiring Triana , a NASA Earth science mission that would provide a near continuous view of Earth and measure Earth’s complete albedo while orbiting the first Sun–Earth Lagrange Point (hereinafter referred to as “the L1 point”). While Triana was canceled, the concept would live on and ultimately transition into the NASA–NOAA DSCOVR mission, which celebrates the 10th anniversary of its launch in February 2025. Gore made brief remarks at the opening session of the 10th DSCOVR Science Team meeting earlier in the day before coming to this meeting. A full “Summary of the 10th DSCOVR EPIC/ NISTAR Science Team Meeting” is published as a separate article in The Earth Observer.

Gore began by thanking all who worked on DSCOVR and other missions at NASA and NOAA. He thanked Makenize Lystrup [GSFC—Center Director] and the team for welcoming him. He also acknowledged the DSCOVR project leaders from GSFC: Adam Szabo [DSCOVR Project Scientist (PS)], Alexander Marshak [DSCOVR Deputy PS], Jay Herman [Earth Polychromatic Imaging Camera (EPIC) Instrument Scientist], Richard Eckman [National Institutes of Health’s Advanced Radiometer (NISTAR) Instrument Scientist], and all those who worked on the mission.

Gore reminisced about when the Triana mission was put into storage in 2001. He remembered his former Senate colleague, Barbara Mikulski [longtime MD Senator] assuring him that they would “feed [the satellite] space snacks” and take care of it until it was ready to use – which ultimately happened in 2008. He also acknowledged those who’ve worked on the DSCOVR mission since launch to extend its capabilities. He also recognized Francisco Valero [former Triana Principal Investigator] who was at University of California, San Diego’s Scripps Institute of Oceanography at the time, and was integral in championing the first iteration of this mission (i.e., Triana), as well as Alan Lazarus [Massachusetts Institute of Technology (MIT)—Research Scientist], who helped design DSCOVR’s solar particle sensor. (Jay Herman was also involved in Triana.) He also mentioned how Bill Nelson chaired the House Space Subcommittee contemporaneously to when Gore chaired the Senate Space Subcommittee.

Gore acknowledged that DSCOVR is just one member of NASA’s fleet of Earth observing satellites – see Figure 1 er– plus those of domestic and international partners. What’s unique about DSCOVR, however, is its location – orbiting the L1 point, nearly one million miles (1.1 million km) away from Earth.

Engage figure 1-1
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Figure 1. [Top] NASA’s Earth Observing Fleet consists of over 20 satellite missions that, with one exception, continuously monitor our home planet from polar or low Earth orbit – including several installed on the International Space Station. The exception is the Deep Space Climate Observatory (DSCOVR) which orbits the first Earth–Sun Lagrange point in the Earth–Sun system [bottom], about 1 million mi (~1.1 million km) from Earth [bottom]. This gives the mission’s two Earth-observing instruments (EPIC and NISTAR) a unique vantage point for observing the full sunlit Earth. [Bottom] Some version of the placeholder diagram above showing DSCOVR orbiting the L1 point between Sun and Earth, 1 million miles from Earth. 
Figure credit: TBD

It can be argued that the modern environmental movement – which resulted in the development NASA’s Earth Observing System and other Earth observing missions – was inspired by a single image – “Earthrise,” which NASA Astronaut Bill Anders took of Earth on Christmas Eve 1968 during the Apollo 8 mission. The adage that “a picture is worth 1000 words” proved true in this instance as this single image changed how society viewed Earth, opening society’s awareness to the fragility and beauty of our home planet. Four years later, on Christmas Eve 1972, the first “Blue Marble” image was released, having been taken by Apollo-12 astronauts, as the spacecraft approached the Moon. (The image inspired subsequent “Blue Marble” images created using composites of satellite data.)

Per the Wikipedia page linked above, “The [Blue Marble image] has been identified as one of the most widely publicized and influential images since its release – particularly in the advocacy for environmental protection.”

Gore mentioned this in his remarks and stressed that this iconic image helped inspire the Triana/DSCOVR concept. This mission has helped scientists develop a more “complete picture” of Earth. He noted that today, DSCOVR/EPIC obtains a new “Blue Marble” (i.e. a full-disc image of Earth) every fifteen minutes – e.g., a set of images of Africa obtained on the 50th anniversary to mimic the original image from Apollo 12. Gore said that we learn so much about Earth from observing it from above (e.g., cloud dynamics, heating, vegetation, and the concentrations of ozone, sulfur dioxide, and particulate matter in the atmosphere). More than 100 peer-reviewed papers have been published on the unique science done at the L1 point by DSCOVR.

Gore said that DSCOVR – along with the rest of NASA’s Earth observing fleet – has produced a treasure trove of information that makes it possible to make the invisible, visible. What was once a mystery can now be explained with scientific data. When DSCOVR was proposed in 1998, the scientific community was on the verge of a technological explosion via the Internet that would allow the collection, storage, processing, and display of untold mountains of information about Earth. It has now evolved even further with the advent of Artificial Intelligence (AI), leading to another potential information explosion just at the time when having such information is crucial.

“We are in the midst of a violent collision between our current society’s organization and the surprisingly fragile ecological systems on which human flourishing depends,” said Gore.

As the participants convened to celebrate the 10th anniversary of DSCOVR, he encouraged those present to think about how this data can be applied to address the incredible challenges of our generation – chief among them the Earth’s rapidly changing climate.

“It’s hard to grapple with just how serious the [situation] is,” said Gore. However, he noted that, “Mother nature is a persuasive advocate. She has our attention!”

He cited the two hurricanes – Helene and Milton – that impacted the U.S. in the weeks prior to this event. Despite the ever-present threat, Gore also pointed to the problematic “assault on funding” for science throughout the Federal budget. To address this need, Gore spoke of the growing need for private–public partnerships to address the imposing climate crisis.

Gore discussed how Climate TRACE, the organization he cofounded, is harnessing NASA data and fusing it with other sources to pinpoint the sources of GHGs. Climate TRACE has determined the 500 million most relevant point sources, along with metadate (data describing the data). In essence, Climate TRACE seeks to reverse-engineer the GHG levels based on other environmental variables. He said that the newest Climate TRACE dataset will be released on November 14, 2024 at COP-29. Gore acknowledged that NASA [Jet Propulsion Laboratory (JPL)] contributes data and conducts analysis of data used in Climate TRACE.

Quoting Lord Kelvin, Gore said, “you can only manage what you measure,” noting that our society has been having trouble managing global warming to date. However, thanks to organizations like NASA, our society is gaining the ability to measure it accurately.

Gore then referenced John F. Kennedy’s famous speech at Rice University in 1961 that is most remembered for the line about “going to the Moon in this decade.” But in that speech Kennedy also said, “We set sail on this new sea, because there is new knowledge to be gained and new rights to be won. And they must be won and used for the progress of all people.”

Gore applied this quote to the ongoing study of Earth’s climate. He said that our society is continuing to “sail on this new sea.” He gave kudos to all the people at NASA who are seizing all the opportunities to gather and reflect on “new knowledge” and apply it to issues directly relevant to societal flourishing.

Gore concluded by saying that the DSCOVR mission is a great example of combining scientific discovery and public enlightenment. It has been incredibly successful, and he feels it should be extended, counting on scientists to expand our access to the knowledge we need to ensure the survival of human civilization.

“If you ever doubt we have the political will to make changes,” said Gore, “just remember that political will is itself a renewable resource.”

After a standing ovation from the audience, Kirschbaum thanked Gore for his remarks and his continued support of the Earth science community.

Panel Discussion on the Future of Earth Science Remote Sensing

Kirschbaum then transitioned to the panel discussion. She reflected on how we live with the impacts of climate every day – e.g., air quality impacting students, hurricanes impacting coastlines and coastal communities, shifting storm patterns impacting farmers.

Since its inception in 1958, NASA has been a leader in studying Earth. The agency makes critical observations from space, aircraft, and the ground to understand climate change. NASA researchers integrate this information into climate models to understand the past, represent the present, and project the future state of our home planet.

Kirschbaum said that today’s panel discussion focuses on the future. While questions remain, she emphasized that the agency works with partners on opportunities to do things differently and open new possibilities. She then introduced three NASA scientists, who also provide leadership beyond the walls of NASA.

  • Miguel Román[GSFC Earth Sciences Division—Deputy Director for Atmospheres];
  • Lesley Ott [GSFC—Project Scientist for the U.S. Greenhouse Gas Center]; and
  • John Bolten [GSFC—Chief of Hydrological Sciences Branch].

She asked each panelist – shown in Photo 2 – to start with by sharing a bit of their story with the audience to give some initial insights into their work and background on how they themselves became interested in studying climate.

Engage photo 2
Photo 2. Following Gore’s remarks, there was a panel discussion entitled “Remote Sensing and the Future of Earth Observations.” Dalia Kirschbaum [GSFC—Director of Earth Sciences Division – left] moderated the discussion, directing questions to the three panelists seated to her right [left to right]: Miguel Román [GSFC Earth Sciences Division—Deputy Director for Atmospheres]; Lesley Ott [GSFC—Project Scientist for the U.S. Greenhouse Gas Center]; and John Bolten [GSFC—Chief of Hydrological Sciences Branch].
Photo credit: Travis Wohlrab

Román began his career as an intern at NASA. After rising through the ranks, he left NASA to work in private industry before recently returning to GSFC. Originally from Puerto Rico, Román has been “inside the walls of a hurricane six times in his life.” He said that American citizens are increasingly experiencing what he experienced as a youth. He noted that two things happen when one in the middle of a hurricane – barometric pressure drops (ears pop) and there is a distinctive hissing sound.

Román said the term hurricane is derived from a Taino word. He explained that in Puerto Rican folklore, Juracán (i.e., the “evil” Goddess of wind – especially hurricanes) was in opposition to Yucahu (i.e., the “good” God of creation, agriculture, peace, and tranquility).

“The hissing winds of Juracán now reverberate across Florida, “ said Román—see Figure 2.

Figure 2.  Animation of brightness temperature data obtained by the Atmospheric Infrared Sounder (AIRS) on NASA’s Aqua mission, showing Hurricane Milton as it approached and impacted Florida in October 2024. Colder temperatures (blues) are associated with the tops of high clouds, so the storm track stands out from the warmer temperature over the waters of the Gulf of Mexico.

Figure credit: TBD

He stressed that these winds are “different” – more intense – than the ones dealt with in the past. He added that we now have “land hurricanes” – called derechos, which are intense, widespread, and fast-moving lines of storms.

Ott said that, in a sense, “science chose her.” She was raised by two scientists who met while studying physics. But she chose to study meteorology because it seemed to her to be the most ‘personal’ of the sciences. As Kirschbaum alluded to in her remarks earlier, weather impacts us all – physically and even emotionally. She loved this aspect of weather and wanted to understand the science behind the “air that we all swim in.”

“Weather seems to be less in background and more on the ‘front page’ these days,” said Ott. “We regularly hear news stories about superstorms and devastating fires. We’re all increasingly impacted by extreme weather.”

She also spoke about the ‘untold’ costs of climate change (e.g., lost school days, lost wages, not knowing if your home will survive a natural disaster), which has impacted how Ott practices meteorology. While she is a meteorologist, Ott doesn’t work on weather prediction. Instead, she uses the same kind of predictive models that are used for weather forecasting to focus on GHGs, which could help society navigate the realities of a changing planet.

In her work, Ott tracks how climate changes – for better or worse. While the trend toward a warming world (climate) fuels more frequent and powerful extreme events (weather), e.g., heat waves, droughts, and storms, there are exceptions achieved through intentional human intervention – e.g., the recovery of the ozone hole (bought about through enforcement of the Montreal Protocol and its Amendments) and improvements of air quality. Both of these examples of positive change illustrate the value of international collaboration to address environmental issues. Ott said that research efforts can help to “track the future of the planet,” leading to more positive changes. Extending these positive changes to GHGs will help communities more effectively plan for and respond to a rapidly changing world.

Bolten began by saying that he comes from Wood County WV and is the youngest of five boys. He could see the Ohio River from his kitchen window where he swam and canoed. Bolten explained that Wood County is in an area known as chemical valley, because a large number of chemical plants in the region provide important products for the world. These plants employ many of the people living in the region.

Bolten’s father designed wastewater treatment systems for these chemical plants and passed along a deep appreciation of the impact humans can have on the environment. Similarly, Bolten spent many years enjoying the Ohio River and West Virginia wilderness, which instilled in him the value of protecting our freshwater resources. He grew up immersed in the environment and wanted to contribute to the greater good of society and make a positive difference in the world. He said that NASA is championing these same core values as an innovator and leader in Earth System Science. Bolten thanked Gore for spurring public discourse around climate.

Question and Answer Session

Kirschbaum began the Q&A session with several prepared questions followed by questions from both in-person and virtual participants – along with some more interspersed comments from the guest of honor.

Kirschbaum posed the first question to Román: How do you see GSFC (NASA) advancements in tech and science helping us to predict extreme weather (e.g., heatwaves and hurricanes)?

Román began his answer by stating that NASA’s EOS era is coming to an end – after more than two decades of observations. NASA’s EOS flagship missions – Terra, Aqua, and Aura – have each far exceeded their scheduled mission life. While scientists and engineers work together to extend the function as long as possible, practical realities (e.g., fuel supply, orbit decay) dictate that all the satellites must be decommissioned in the next few years. The EOS era has taught NASA and its partners many lessons about how to operate under what he described as “an accelerated set of extreme climate events.”

“We simply could not have anticipated some of things we’re facing now when the EOS missions were designed,” said Ramon, citing the development of derechos and the rapid intensification of tropical cyclones.

The EOS mission instrument teams developed a whole Earth observing technology toolbox on the fly. For example, scientists learned that while microwave sounders work well over water, these instruments face challenges over land due to surface emissivity variations. Infrared (IR) sounders, on the other hand, provide valuable data over all surfaces during clear conditions, but they can’t penetrate thick clouds. Investigators combined both measurements, producing a powerful tool for observing the changing Earth system and beginning to quantify the impact of those changes.

While it is sad to see the EOS era end, Román said that NASA is entering an exciting new era where new technologies will allow for miniaturization of sounders. He also mentioned new observing technologies, such as the Hyperspectral Microwave Photonic Instrument (HyMPI) . The microwave sounders currently flying – which are part of NASA’s current Program of Record – retrieve atmospheric profiles with approximately 20 vertical layers. By contrast, HyMPI can produce as many as 1000 layers, offering enhanced thermodynamic sounding skill in the Earth’s planetary boundary layer (PBL) – the first 2 km (~1 mi) of the atmosphere – over conventional microwave sounders from the current Program of Record.

Román emphasized that the PBL is an area that is still poorly observed and understood. This lowest level of the atmosphere is where humans and other plants and animals live – and where most climate impacts occur. It is thus vitally important to improve our understanding of the PBL. To emphasize this point, Román cited that one million stillbirths can be linked to tropospheric ozone pollution every year. The encouraging news is that NASA’s data can inform public health policy to help mitigate these harmful impacts.

“The problem is an integrated one,” said Román, “and the Earth System Observatory (ESO) is designed for all of its missions to be integrated.”

Román stressed that the climate challenges are complex, and ESO provides a model for all future campaigns to integrate many approaches to solve big problems.

Kirschbaum directed the next question to Ott: As the NASA leader of the U.S. Greenhouse Gas Center, where do you see NASA making contributions?

Ott responded that there has been tremendous innovation and advancement in the field of Earth observations over the past several decades – i.e., during the EOS era. As Al Gore alluded to in his earlier remarks, increasingly, this innovation comes from the pairing of private sector with the public data from satellites, aircraft campaigns, and ground networks that provide the infrastructure that companies need to test and improve new approaches.

NASA has also played a foundational role in developing the systems approach to studying Earth. For example, half of human-produced emissions (sources) of carbon dioxide (CO2) are absorbed by vegetation and the ocean (sinks). It remains unclear how long this balance will continue, however. NASA aims to bring together different measurements of vegetation, ocean productivity, and gases in the atmosphere and make them readily available to the public. A wholistic approach to climate requires input from multiple satellites to successfully model changes in the concentration GHGs throughout the Earth system. To achieve this goal, the best from the government (e.g., NASA data) needs to merge with private industry to produce consistent long term data records that people can trust.

Kirschbaum agreed that delivering trusted information and providing foundational datasets are core activities for NASA, and used that to segue to the next question, which she addressed to Bolten: NASA (GSFC) sits at the nexus of satellite observations and modeling. Where do you see progress of Earth Science to Action particularly in area of water quality?

Bolten said that the first image of Earth was obtained 78 years ago in 1946. It happened somewhat by chance. Soldiers and scientists at White Sands Missile Range strapped a camera to a captured German V2 rocket, and they were fortunate to get a clear image of Earth. Fast forward to today, NASA has a fleet of more than 20 Earth-observing satellites – see Figure 1 [top] – that provide routine Earth observations. These data are vital for understanding our home planet, and for decision making. The observations from these satellites can be analyzed and used to inform decisions about Earth.

The Electronic Numerical Integrator and Computer (ENIAC) was created the same year as the first Earth image. He noted that ENIAC took up an entire room. Today, his smart phone, which fits in his pocket, is more than 230 million times faster than ENIAC – driving home the point that technology has advanced beyond what most could imagine. Bolten also noted that 2024 is NASA’s Year of Open Science.

Bolten said that his job focuses on food and water insecure areas, which often correlates with areas that lack data infrastructure. There is a vital need to strategically integrate open science and cloud-based services.

“We can’t do this [work] in a bubble,” said Bolten. “We must work together.”

Kirschbaum elevated a question from an attendee: There have been various climate change scenarios that have been offered as possibilities. Which one seems most likely to you to be correct?

Ott explained that the worst- or best-case scenarios are usually outliers (i.e., the conditions in the “real world” typically lie somewhere in between the extremes). She commented that we’ve seen a large climate change investment from the Biden Administration. Those kinds of investments will have impact and have the power to change the trajectory for the future. Part of what NASA does is to show the world that the data we collect does make a tangible difference. That gives society reason for hope. The point of U.S. Greenhouse Gas Center is to bring together all these GHG observations in one place to analyze them and study them to show that we’re making progress on confronting this challenging issue. The objective is to create tangible evidence that, “when we take action, we can change things.”

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As if to underscore Ott’s point, Gore responded during her presentation that he believes that public choice does significantly impact how the future unfolds.

“What we decide has consequences,” he said. 

Gore is convinced the issue of our changing climate could be addressed if our society made up our collective mind to do it and then committed ourselves to take the decisive action needed to make that decision a reality in the near future.

 “The future is really up to us,” said Gore.

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The final three questions came from online participants.

How can NASA improve its messaging?

Bolten replied that this is a question that comes up repeatedly in the context of NASA outreach and communications. In the context of today’s discussion, he suggested the need to produce information that is not just useful but also usable (i.e., it can be applied in ways that directly benefit society). As an example, he pointed to the use of machine learning to model a flash flooding event in Ellicott City, MD (described in a 2020 article in Journal of Hydrometeorology) where waters rose from a normal levels to a devastating flash flood in about seven minutes – see Photo 3. Bolten continued that transparency, as well as connecting to people’s motivations, are keys to being more successful with NASA’s messaging.

Engage photo 3
Photo 3. In May 2018 devastating floodwaters impacted the town of Ellicott City, MD. Water levels in the small basin above the down rose from normal levels to flash flooding in seven minutes. 
Figure credit: NOAA’s Physical Science Laboratory

What big challenges could NASA turn to an opportunity to address climate change?

Román said that advances in forecasting on seasonal to sub-seasonal scales are key areas of focus for studies of Earth’s atmosphere. He noted that it is important to have observations and understand these observations to model events. For sub-seasonal prediction, we need to understand stratospheric dynamics and the chemistry going on in the upper troposphere and lower stratosphere.

“Major fires and volcanic eruptions create massive changes in the atmosphere,” said Román. “We can’t see them like we can when we view a Landsat image.”

One tool that could help us with sub-seasonal forecasting is the Stratosphere Troposphere Response using Infrared Vertically-resolved light Explorer (STRIVE) mission, which is one of four mission proposals for the first Earth System Explorer missions chosen for initial Phase A study. This mission aims to examine the interaction between the upper troposphere and the lower stratosphere. In particular, STRIVE will make observations of Earth’s limb (i.e., a narrow slice of atmosphere), which can help scientists gain insight into aerosol loading. According to Román, this data will be key to getting an accurate 30-day forecast. He referred to this information as the “holy grail” in terms of preparedness and resilience by improving early warnings for extreme weather. Some nations are limited to only using Doppler radar and if it fails, they are essentially blind to what is coming.

Kirschbaum cited NASA’s AOS mission, which will be part of ESO, as another example of an important new measuring capability. This mission will represent the “next generation” for precipitations and aerosol observations. Scientists can use the data collected to understand how these phenomena interact with each other and with other atmospheric constituents to form storms.

“AOS will be the baseline while STRIVE would be the bottom line,” concluded Román.

What is the path forward to develop capacity for new observations while still maintaining high-quality, long-term time series and making the data accessible to the public?

Ott cited the Carbon Mapper coalition as a current example where such a balance is being achieved/. Carbon Mapper made its first light images available to the public last week. This mission brings together a unique coalition of partners (including NASA/JPL and Planet, a private company) to develop and deploy two satellites with capabilities to detect and quantify methane (CH4) – e.g., see Figure 3 – and CO2 super-emitters at a level of granularity needed to support direct mitigation action.

Engage figure 3
Figure 3. On December 4, 2024, the Tanager–1 satellite detected methane (CH4) plumes streaming downwind from oil and gas facilities in the Permian Basin (in west Texas and southeast New Mexico). This is one of more than 300 images of CH4 super-emitters from the oil and gas, coal, waste, and agriculture sectors across 25 countries that were released in February 2025. Tanager–1 launched in August 2024 and is the first satellite developed by the Carbon Mapper coalition between Planet (a private company) and NASA/Jet Propulsion Laboratory (JPL) and other partners. Planet owns, launched, and operates the satellite, which is equipped with technology from JPL.
Figure credit: Carbon Mapper

NASA’s investments in technology via its Earth Science Technology Office (ESTO) have enabled new airborne instruments that can be deployed in partnership with industry to demonstrate the quality of present-day satellite technologies and to provide a pathway toward next generation technologies. She stressed that the Federal government continues to play a crucial role in establishing standards and ensuring data integrity and continuity. NASA, for example, invests in ground-based systems and data services that help enable the commercial satellite industry. Long-term continuity of measurements is essential to connect new observations to existing ones. In this way, we can enable the continuing rise of NewSpace, while still providing foundational integrity and stability of the long-term climate data records that NASA and other Federal agencies maintain. This framework helps tie all the NewSpace endeavors together.

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Gore cited an example of a public–private partnership that happened in the past. He commented that in 1998 (the same year that Triana was proposed) he was also involved in proposal for Digital Earth. The guiding vision behind Digital Earth was to be able to hover over any point and drop down through successively more detailed layers. NASA contracted with a company called Keyhole, which Google acquired in the early 2000s. Gore raised this example to point out that Google Earth is the result of those initial efforts.

Gore also connected this discussion to his work on Climate TRACE, which he had mentioned in his remarks earlier as a current example of public–private partnership. He stated that while we can see CH4 from space, the resolution is relatively low, i.e., a wide area must be scanned to get a CH4 measurement) and higher resolution is required to identify specific (or point) sources of CH4. Climate TRACE offers such higher resolution CH4 measurements, allowing researchers to focus more on identifying specific sources of pollution. By contrast the atmosphere is so enriched with CO2 that the signal-to-noise ratio is too high to measure the gas from space. For CO2 analysis, Climate TRACE uses AI to fuse together various images to allow CO2 to be detectable. The resulting measurements are precise enough to detect ripple ponds created by rotating fan blades.

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Closing Remarks

Dalia Kirschbaum closed the meeting by thanking the guest of honor, Al Gore, once again for coming to the GSFC event. Gore not only spoke but was an active participant who demonstrated his knowledge of this subject area gained from years of experience working on climate issues. She quipped that “he’s the only former Vice President ever to use the Term signal-to-noise ratio correctly when talking to scientists.”.

Kirschbaum also thanked everyone who participated in this event – including the over 800 online participants. While the discussions today offered numerous glimpses into the future of Earth remote-sensing observations, this information barely scratches the surface of all the work being carried out by scientists and engineers at NASA to make these plans a reality. She thanked all of those who work at NASA – who often put in long hours, quietly, behind the scenes without much recognition – for the work they do daily to enable NASA’s mission.

Alan B. Ward
NASA’s Goddard Space Flight Center/Global Science & Technology Inc.
alan.b.ward@nasa.gov

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Mar 11, 2025

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      A NASA F/A-18 research aircraft flies above California near NASA’s Armstrong Flight Research Center in Edwards, California, testing a commercial precision landing technology for future space missions. The Psionic Space Navigation Doppler Lidar (PSNDL) system is installed in a pod located under the right wing of the aircraft.NASA Nestled in a pod under an F/A-18 Hornet aircraft wing, flying above California, and traveling up to the speed of sound, NASA put a commercial sensor technology to the test. The flight tests demonstrated the sensor accuracy and navigation precision in challenging conditions, helping prepare the technology to land robots and astronauts on the Moon and Mars. 
      The Psionic Space Navigation Doppler Lidar (PSNDL) system is rooted in NASA technology that Psionic, Inc. of Hampton, Virginia, licensed and further developed. They miniaturized the NASA technology, added further functionality, and incorporated component redundancies that make it more rugged for spaceflight. The PSNDL navigation system also includes cameras and an inertial measurement unit to make it a complete navigation system capable of accurately determining a vehicle’s position and velocity for precision landing and other spaceflight applications. 
      NASA engineers and technicians install the Psionic Space Navigation Doppler Lidar (PSNDL) system into a testing pod on a NASA F/A-18 research aircraft ahead of February 2025 flight tests at NASA’s Armstrong Flight Research Center in Edwards, California.NASA The aircraft departed from NASA’s Armstrong Flight Research Center in Edwards, California, and conducted a variety of flight paths over several days in February 2025. It flew a large figure-8 loop and conducted several highly dynamic maneuvers over Death Valley, California, to collect navigation data at various altitudes, velocities, and orientations relevant for lunar and Mars entry and descent. Refurbished for these tests, the NASA F/A-18 pod can support critical data collection for other technologies and users at a low cost. 
      Doppler Lidar sensors provide a highly accurate measurement of speed by measuring the frequency shift between laser light emitted from the sensor reflected from the ground. Lidar are extremely useful in sunlight-challenged areas that may have long shadows and stark contrasts, such as the lunar South Pole. Pairing PSNDL with cameras adds the ability to visually compare pictures with surface reconnaissance maps of rocky terrain and navigate to landing at interesting locations on Mars. All the data is fed into a computer to make quick, real-time decisions to enable precise touchdowns at safe locations. 
      Psionic Space Navigation Doppler Lidar (PSNDL) system installed in a testing pod on a NASA F/A-18 research aircraft ahead of February 2025 flight tests at NASA’s Armstrong Flight Research Center in Edwards, California.NASA Since licensing NDL in 2016, Psionic has received funding and development support from NASA’s Space Technology Mission Directorate through its Small Business Innovative Research program and Tipping Point initiative. The company has also tested PSNDL prototypes on suborbital vehicles via the Flight Opportunities program. In 2024, onboard a commercial lunar lander, NASA successfully demonstrated the predecessor NDL system developed by the agency’s Langley Research Center in Hampton, Virginia. 
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    • NASA
      Sols 4484-4485: Remote Sensing on a Monday
      By NASA
      Curiosity Navigation Curiosity Home Mission Overview Where is Curiosity? Mission Updates Science Overview Instruments Highlights Exploration Goals News and Features Multimedia Curiosity Raw Images Images Videos Audio Mosaics More Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions Mars Home 4 min read
      Sols 4484-4485: Remote Sensing on a Monday
      NASA’s Mars rover Curiosity acquired this image using its Left Navigation Camera on March 17, 2025 — sol 4483, or Martian day 4,483 of the Mars Science Laboratory mission — at 09:38:17 UTC. NASA/JPL-Caltech Written by Conor Hayes, Graduate Student at York University
      Earth planning date: Monday, March 17, 2025
      Last week I was in Houston, Texas, at the Lunar and Planetary Science Conference. The mid-March weather in Houston is often more like mid-summer weather here in Toronto, so it has been a bit of a shock coming home to temperatures that are hovering around freezing rather than being in the upper 20s (degrees Celsius, or the low to mid 80s for those of you still using Fahrenheit). Still, Toronto is positively balmy compared to Gale Crater, where temperatures usually range between minus 80°C and minus 20°C (or minus 110°F to minus 5°F) during this part of the year. These cold temperatures and their associated higher demands on the rover’s available power for heating are continuing to motivate many of the decisions that we make during planning.
      We received the double good news this morning that the weekend’s drive completed successfully, including the mid-drive imaging of the other side of “Humber Park” that Michelle mentioned in Friday’s blog, and that our estimates of the weekend plan’s power consumption ended up being a little conservative. So we started planning exactly where we wanted to be, and with more power to play around with than we had expected. Yay!
      The weekend’s drive left us parked in front of some rocks with excellent layering and interesting ripples that we really wanted to get a closer look at with MAHLI. (See the cover image for a look at these rocks as seen by Navcam.) Sadly, we also ended up parked in such a way that presented a slip hazard if the arm was unstowed. As much as we would have loved to get close-up images of these rocks, we love keeping Curiosity’s arm safe even more, so we had to settle for a remote sensing-only plan instead.
      Both the geology and mineralogy (GEO) and the environmental science (ENV) teams took full advantage of the extra power gifted to us today to create a plan packed full of remote sensing observations. Because we’re driving on the first sol of this two-sol plan, any “targeted” observations, i.e. those where we know exactly where we want to point the rover’s cameras, must take place before the drive. The first sol is thus packed full of Mastcam and ChemCam observations, starting with a 14×3 Mastcam mosaic of the area in front of us that’s outside of today’s workspace. Individual targets then get some Mastcam love with mosaics of various ripple and layering features at “Verdugo Peak,” “Silver Moccasin Trail,” and “Jones Peak.” Mastcam and ChemCam also team up on a LIBS target, “Trancas Canyon,” and some more long-distance mosaics of Gould Mesa, a feature about 100 meters away from us (about 328 feet) that we’ll be driving to the south of as we continue to head toward the “boxwork” structures.
      After a drive, there often aren’t many activities scheduled other than the imaging of our new location that we’ll need for the next planning day. However, in this plan ENV decided to take advantage of the fact that Navcam observations can take place at the same time that the rover is talking to one of the spacecraft that orbit Mars. This is a useful trick when power is tight as it allows us to do more science without adding additional awake time (since the rover needs to be awake anyway to communicate with the orbiters). Today, it’s being used to get some extra cloud observations right before sunset, a time that we don’t often get to observe. These observations include a zenith movie that looks straight up over the rover and a “phase function sky survey,” which takes a series of nine movies that form a dome around the rover to examine the properties of the clouds’ ice crystals. 
      The second sol of this plan is much more relaxed, as post-drive sols often are because we don’t know exactly where we’ll be after a drive. Today, we’ve just got our usual ChemCam AEGIS activity, followed by a pair of Navcam cloud and cloud shadow movies to measure the altitude of clouds over Gale. As always, we’ve also got our usual set of REMS, RAD, and DAN activities throughout this plan.
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    • NASA
      The Earth Observer Editor’s Corner: January–March 2025
      By NASA
      Explore This Section Earth Home Earth Observer Home Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam More Archives 11 min read
      The Earth Observer Editor’s Corner: January–March 2025
      NASA’s Earth Observing fleet continues to age gracefully. While several new missions have joined the fleet in the past year, scientists and engineers work to extend the life of existing missions and maximize their science along the way. The crowning example is the first Earth Observing System (EOS) Flagship mission, Terra, which celebrated a quarter-century in orbit on December 18, 2024.
      Terra, continues to collect daily morning Earth observations using five different instruments: Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), Clouds and the Earth’s Radiant Energy System (CERES), Multi-angle Imaging SpectroRadiometer (MISR), Moderate Resolution Imaging Spectroradiometer (MODIS), and Measurement of Pollution in the Troposphere (MOPITT). Collectively, these observations have established a robust satellite record of global scientific processes to track changes in temperature, glaciers, clouds, vegetation, land-use, air quality, and natural hazards such as hurricanes, wildfires, and volcanic eruptions.
      Originally designed for a six-year prime mission, Terra continues to deliver data used by emergency managers, researchers, and modelers over a quarter-of-a-century later. On December 18th, 2024, NASA celebrated the 25th anniversary of Terra’s launch with a celebration at the Goddard Space Flight Center (GSFC) Visitor’s Center. NASA Senior management [from NASA Headquarters and GSFC] as well as other key figures from Terra’s long history gave brief remarks and perspectives on Terra’s development and achievements. To read a review of the celebration, see “Celebrating 25 Years of Terra.”
      Terra-related sessions (poster and oral) during the Fall American Geophysical Union (AGU) meeting were well-attended. The Terra team took advantage of the meeting to have a celebratory anniversary dinner that included attendees representing each of the five instruments.
      Another mission to recently reach a longevity milestone is NASA’s Orbiting Carbon Observatory-2 (OCO-2), which celebrated 10 years in space last summer. OCO-2, which launched on July 2, 2014, from the Vandenburg Air Force (now Space Force) Base in California, was originally designed as a pathfinder mission to measure carbon dioxide (CO2) with the precision and accuracy needed to quantify where, when, and how the Earth inhales and exhales this important greenhouse gas seasonally. OCO-2 was part of the international Afternoon Constellation, or “A-Train,” which also included Aqua, Aura, CloudSat, and CALIPSO, as well as international partner missions.
      Since its launch, OCO-2 data have revealed unprecedented insights into how the carbon cycle operates – from observing the impact and recovery of tropical land and ocean ecosystems during El Niño events to revealing the outsized impacts of extreme events, such as floods, droughts, and fires on ecosystem health and functioning. Researchers from around the world use OCO-2 data, opening new opportunities for understanding the response of the carbon cycle to human-driven perturbations, such as the impact of COVID lockdowns on atmospheric CO2 and improved quantification of emissions from large power plants and cities.
      OCO-2 also maps vegetation fluorescence, which shows promise as a reliable early warning indicator of flash drought. During photosynthesis, plants “leak” unused photons, producing a faint glow known as solar-induced fluorescence (SIF). The stronger the fluorescence, the more CO2 a plant is taking from the atmosphere to power its growth. Ancillary SIF measurements from OCO-2 will help scientists better predict flash droughts, and understand how these impact carbon emissions.
      Ten years into the mission, OCO-2 has become the gold standard for CO2 measurements from space. The spacecraft and instrument continue to perform nominally, producing data leading to new scientific discoveries.
      OCO–3, built from spare parts during the build of OCO-2 and launched to the International Space Station (ISS) in 2019, also celebrated a milestone, marking five years in orbit on May 4, 2024. While the follow-on has the same instrument sensitivity and makes essentially the same measurements as OCO-2, the vantage point on the ISS as opposed to OCO-2’s polar orbit and the use of a new pointing mirror assembly (PMA) results in significant day-to-day spatial and temporal sampling differences that allows CO2 tracking for diurnal variability. In addition, the flexible PMA system allows for a much more dynamic observation-mode schedule.
      Further out in space, about 1 million mi (~1.1 million km) from Earth, orbiting the “L1” Lagrange point between Earth and Sun, the Deep Space Climate Observatory (DSCOVR) celebrated the 10th anniversary of its launch on February 11, 2025. The two NASA Earth observing instruments on DSCOVR are the Earth Polychromatic Camera (EPIC) and National Institute of Standards and Technology (NIST) Advanced Radiometer [NISTAR].
      The 10th DSCOVR EPIC NISTAR Science Team Meeting was held October 16–18, 2024 at Goddard Space Flight Center. Former U.S. Vice President Al Gore opened the meeting with remarks that focused on remote sensing and the future of Earth observations. Following Gore’s remarks, DSCOVR mission leadership and representatives from GSFC and the National Oceanic and Atmospheric Administration (NOAA) gave presentations on DSCOVR operations, EPIC calibration, and NISTAR Status and Science.
      The meeting provided an opportunity for participants to learn the status of DSCOVR’s Earth-observing instruments, the status of recently released Level-2 (geophysical) data products, and the resulting science. As more people use DSCOVR data worldwide, the science team hopes to hear from users and team members at its next meeting. The latest updates from the mission can be found on the EPIC website. For more details, see the Summary of the 10th DSCOVR EPIC and NISTAR Science Team Meeting.
      Flying in the space between satellites and ground-based observations, NASA’s Airborne Science Program operates a fleet of aircraft, unpiloted aerial vehicles, and even kites to study Earth and space science. Since 1987, a highly modified McDonnell Douglas DC-8 aircraft has been a mainstay of ASP’s fleet ­­– see Photo 1. The aircraft, located at NASA’s Armstrong Flight Research Center (AFRC) in California, flew countless missions as a science laboratory, producing science data for the national and global scientific communities. NASA decided to retire the venerable DC-8 aircraft, which made its last science flight in April 2024. The DC-8 is being replaced with a similarly refurbished Boeing 777 aircraft, which will be even more capable than the DC-8 and is located at the NASA Langley Research Center (LaRC).
      The NASA History Office and NASA Earth Science Division cohosted a workshop, titled “Contributions of the DC-8 to Earth System Science at NASA,” on October 24–25, 2024 at the Mary W. Jackson NASA Headquarters (HQ) Building in Washington, DC – for more details on the DC-8 event, see the article The NASA DC-8 Retires: Reflections on its Contributions to Earth System Science.
      Photo 1. NASA’s DC-8 flying laboratory flew Earth science missions from 1987 to 2024. Expert maintenance allowed the aircraft to conduct research on six continents and study ice fields on the seventh, Antarctica. Image Credit: Lori Losey/NASA There are also updates from three recent NASA field campaigns – where ground observations are timed and coordinated with aircraft flights (often at more than one altitude) and with satellite overpasses to gain a comprehensive (i.e., multilayered, multiscale) picture of the atmosphere over a certain area. 
      The Westcoast & Heartland Hyperspectral Microwave Sensor Intensive Experiment (WHyMSIE) campaign was held from October 17- November 18, 2024. Serving as a future NASA planetary boundary-layer (PBL) mission prototype, WHyMSIE aimed to capture a wide variety of thermodynamic, moisture, and PBL regimes across a variety of surface types. WHyMSIE was an initial step towards an integrated and affordable PBL observing system of systems, with multiple observing nodes – i.e., space, suborbital, and ground – from passive and active sensors to enable a comprehensive and coherent picture of essential PBL variables and hydrometeors that is not possible with any single sensor, observational approach, or scale. As a partnership between NASA and NOAA, this field campaign flew a first-of-its-kind hyperspectral microwave airborne measurements (CoSMIR-H) that was complemented by other passive (thermal emission, solar reflectance) and active (lidar, radar) sensors flying onboard the NASA ER-2 (AFRC) and G-III (LaRC), with coordination over a variety of ground-based sensor facilities.
      The GSFC Lidar Observation and Validation Experiment (GLOVE) was conducted in February 2025 at Edwards Air Force Base, California – see photo 2. GLOVE flew the Cloud Physics Lidar (CPL), Roscoe lidar, enhanced MODIS Airborne Simulator (eMAS) imaging scanner, and Cloud Radar System (CRS) on the ER-2 to validate NASA ICESat-2 atmospheric data products and validate ESA’s recently launched EarthCARE lidar, radar, and spectrometer products.
      NASA’s Earth Science Division FireSense project focuses on delivering NASA’s unique Earth science and technological capabilities to operational agencies, striving to address challenges in US wildland fire management. Together with agency, academic, and private partners, FireSense completed an airborne campaign in a wildfire smoke-impacted airshed in Missoula, MT on August 27–29, 2024. During the three-day campaign, a NASA Uninhabited Aerial System (UAS) team conducted eight data-collection flights, partnering these launches with weather balloon launches.
      FireSense uses airborne campaigns to evaluate capabilities and technologies to support decision making in wildland fire management and air quality forecasting. Targeted data collection produces better forecasts and more successful technology transfer to wildland fire operations. In the future, the FireSense Program will coordinate two airborne campaigns for spring 2025 at Geneva State Forest, Alabama and Kennedy Space Center located within Merritt Island National Wildlife Refuge, Florida. Both 2025 campaigns will incorporate data collection before, during, and after prescribed fire operations. Beyond NASA, the campaign works in close partnership with the U.S. Forest Service, National Weather Service, U.S. Fish and Wildlife Service, Department of Defense, as well as partners in academia and the private sector. For more information on FireSense’s most recent campaign in Montana see the Editor’s Corner supplemental summary of “The FireSense Project.”
      Photo 2. NASA personnel stand in front of theNASA ER-2 at Edwards Air Force Base, California, during the GSFC Lidar Observation and Validation Experiment (GLOVE) in February 2025. Image credit: John Yorks/NASA Congratulations to Jack Kaye, Associate Director for research with the Earth Science Division within NASA’s Science Mission Directorate, who has received the William T. Pecora Award for his vision and creative leadership in multidisciplinary Earth science research, as well as spurring advancements in the investigator community, supporting development of sensors, and shaping NASA satellite and aircraft missions and research programs at the highest levels. To read more about this accomplishment, see “Kaye Honored with Pecora Award.”
      On the outreach front, AGU returned to Washington, DC, for its annual meeting from December 9–14, 2024. NASA continued to uphold its long-standing tradition as an AGU partner and exhibitor, leveraging the meeting as an opportunity to share the agency’s cutting-edge research, data, and technology with the largest collection of Earth and planetary science professionals in the world. Many of the estimated 25,000 students, scientists, and industry personnel who attended the conference visited the NASA Science exhibit, interacting with NASA subject matter experts and listening to Hyperwall presentations throughout the week.
      As the final event in a busy calendar of annual scientific conferences, AGU is often an opportunity for NASA scientists to publish findings from the previous year and set goals for the year ahead. The agency’s robust portfolio of missions and programs will continue to set new records, such as NASA’s Parker Solar Probe pass of the Sun, and conduct fundamental research in Earth and space science. To read more about AGU 2024, see the article: AGU 2024: NASA Science on Display in the Nation’s Capital.
      Ending on a somber note, we recently posted three notable obituaries. Each of these individuals made significant contributions to EOS history, which are highlighted in the In Memoriam articles linked below.  
      Jeff Dozier, an environmental scientist, snow hydrologist, researcher, academic, and former EOS Project Scientist, died on November 17, 2024. Jeff embraced remote sensing with satellites to measure snow properties and energy balance. As a Project Scientist with the Earth Observing System Data and Information System (EOSDIS), he contributed to the design and management of very large information systems that would impact spatial modeling and environmental informatics.
      Berrien Moore, Dean of the College of Atmospheric and Geographic Sciences at the University of Oklahoma (OU), died on December 17, 2024. Berrien served in several roles with NASA, including as a committee member and later chair of the organization’s Space and Earth Science Advisory Committee, Chair of the Earth Observing System Payload Advisory Committee, member and Chair of NASA’s Earth Science and Applications Committee, and member of the NASA Advisory Council. Berrien received NASA’s highest civilian honor, the Distinguished Public Service Medal, for outstanding service and the NOAA Administrator’s Recognition Award.
      Pierre Morel, the first director of the World Climate Research Programme (WCRP) and founding member of WCRP’s Global Energy and Water Exchanges (GEWEX) Core project, died on December 10, 2024. Pierre’s work played an integral role in the development of tools used to study the atmosphere, many of which are still active today. Pierre was the recipient of the 2008 Alfred Wegener Medal & Honorary Membership for his outstanding contributions to geophysical fluid dynamics, his leadership in the development of climate research, and the applications of space observation to meteorology and the Earth system science.
      Steve Platnick
      EOS Senior Project Scientist
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      Last Updated Mar 20, 2025 Related Terms
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    • European Space Agency
      332nd ESA Council: Media information session
      By European Space Agency
      Video: 00:34:08 Watch the media information session in which ESA Director General Josef Aschbacher and ESA Council Chair Renato Krpoun (CH) update journalists on the key decisions from the ESA Council meeting, held at ESA Headquarters in Paris on 19 and 20 March 2025.
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