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By NASA
NASA NASA astronaut Raja Chari and Dr. V. Narayanan, chairman of ISRO (Indian Space Research Organisation), interact outside the Orion spacecraft mockup at NASA’s Johnson Space Center in Houston. Narayanan and Indian officials visited NASA Johnson and NASA’s Kennedy Space Center in Florida, ahead of the Axiom Mission 4 launch to the International Space Station.
As part of a collaboration between NASA and ISRO, Axiom Mission 4 delivers on a commitment highlighted by President Trump and Indian Prime Minister Narendra Modi to send the first ISRO astronaut to the station. The space agencies are participating in five joint science investigations and two in-orbit science, technology, engineering, and mathematics demonstrations. NASA and ISRO have a long-standing relationship built on a shared vision to advance scientific knowledge and expand space collaboration.
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By NASA
Ozone high in the stratosphere protects us from the Sun’s ultraviolet light. But ozone near the ground is a pollutant that harms people and plants. The San Joaquin Valley has some of the most polluted air in the country, and NASA scientists with the new Ozone Where We Live (OWWL) project are working to measure ozone and other pollutants there. They need your help!
Do you live or work in Bakersfield, CA? Sign up to host an ozone sensor! It’s like a big lunch box that you place in your yard, but it’s not packed with tuna and crackers. It’s filled with sensors that measure temperature and humidity and sniff out dangerous gases like methane, carbon monoxide, carbon dioxide, and of course, ozone.
Can you fly a plane? Going to the San Joaquin Valley? Sign up to take an ozone sensor on your next flight! You can help measure ozone levels in layers of the atmosphere that are hard for satellites to investigate. Scientists will combine the data you take with data from NASA’s TEMPO satellite to improve air quality models and measurements within the region. Find out more here or email: Emma.l.yates@nasa.gov
Join the Ozone Where We Live (OWWL) project and help NASA scientists protect the people of the San Joaquin Valley! Credit: Emma Yates Share
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Last Updated Jun 24, 2025 Related Terms
Citizen Science Earth Science Division Tropospheric Emissions: Monitoring of Pollution (TEMPO) Explore More
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By NASA
Explore This Section Science Artemis Mission Accomplished! Artemis… Overview Learning Resources Science Activation Teams SME Map Opportunities More Science Activation Stories Citizen Science 5 min read
Mission Accomplished! Artemis ROADS III National Challenge Competitors Celebrate their Achievements
The NASA Science Activation program’s Northwest Earth and Space Sciences Pathways (NESSP) team has successfully concluded the 2024–2025 Artemis ROADS III National Challenge, an educational competition that brought real NASA mission objectives to student teams (and reached more than 1,500 learners) across the country. From December 2024 through May 2025, over 300 teams of upper elementary, middle, and high school students from 22 states participated, applying STEM (Science, Technology, Engineering, and Mathematics) skills in exciting and creative ways.
Participants tackled eight Mission Objectives inspired by NASA’s Artemis missions, which aim to return humans to the Moon. Students explored challenges such as:
Designing a water purification system for the Moon inspired by local water cycles Developing a Moon-based agricultural plan based on experimental results Programming a rover to autonomously navigate lunar tunnels Engineering and refining a human-rated water bottle rocket capable of safely returning a “chip-stronaut” to Earth Envisioning their future careers through creative projects like graphic novels or video interviews Exploring NASA’s Artemis program through a new Artemis-themed Lotería game In-person hub events were hosted by Northern Arizona University, Central Washington University, and Montana State University, where teams from Washington, Montana, and Idaho gathered to present their work, collaborate with peers, and experience life on a college campus. Students also had the chance to connect virtually with NASA scientists and engineers through NESSP’s NASA Expert Talks series.
“Artemis ROADS III is NESSP’s eighth ROADS challenge, and I have to say, I think it’s the best one yet. It’s always inspiring to see so many students across the country engage in a truly meaningful STEM experience. I heard from several students and educators that participating in the challenge completely changed their perspective on science and engineering. I believe that’s because this program is designed to let students experience the joy of discovery and invention—driven by both teamwork and personal creativity—that real scientists and engineers love about their work. We also show students the broad range of STEM expertise NASA relies on to plan and carry out a mission like Artemis. Most importantly, it gives them a chance to feel like they are part of the NASA mission, which can be truly transformative.”
– Dr. Darci Snowden, Director, NESSP
NESSP proudly recognizes the following teams for completing all eight Mission Objectives and the Final Challenge:
Space Pringles, 3rd-5th Grade, San Antonio, TX Space Axolotls, 3rd-5th Grade, Roberts, MT TEAM Wild, 6th-8th Grade, Eagle Mountain, UT Pessimistic Penguins, 6th-8th Grade, Eagle Mountain, UT Dwarf Planets, 6th-8th Grade, Eagle Mountain, UT Astronomical Rovers, 6th-8th Grade, Eagle Mountain, UT Cosmic Honeybuns, 6th-8th Grade, Eagle Mountain, UT Houston we have a Problem, 6th-8th Grade, Eagle Mountain, UT FBI Wanted List, 6th-8th Grade, Eagle Mountain, UT Lunar Legion, 6th-8th Grade, San Antonio, TX Artemis Tax-Free Space Stallions, 6th-8th Grade, Egg Harbor, NJ Aquila, 6th-8th Grade, Gooding, ID Space Warriors, 6th-8th Grade, Wapato, WA Team Cygnus, 6th-8th Grade, Red Lodge, MT Maple RocketMen, 6th-8th Grade, Northbrook, IL RGB Hawks, 6th-8th Grade, Sagle, ID The Blue Moon Bigfoots, 6th-8th Grade, Medford, OR W.E.P.Y.C.K., 6th-8th Grade, Roberts, MT Lunar Dawgz, 6th-8th Grade, Safford, AZ ROSEBUD ROCKETEERS, 6th-8th Grade, Rosebud, MT The Cosmic Titans, 6th-8th Grade, Thomson Falls, MT The Chunky Space Monkeys, 6th-8th Grade, Naches, WA ROSEBUD RED ANGUS, 9th-12th Grade, Rosebud, MT Bulky Bisons, 9th-12th Grade, Council Grove, KS The Falling Stars, 9th-12th Grade, Thomson Falls, MT The Roadkillers, 9th-12th Grade, Thomson Falls, MT The Goshawks, 9th-12th Grade, Thomson Falls, MT Sequim Cosmic Catalysts, 9th-12th Grade, Sequim, WA Spuddie Buddies, 9th-12th Grade, Moses Lake, WA Astrocoquí 2, 9th-12th Grade, Mayaguez, PR Big Sky Celestials, 9th-12th Grade, Billings, MT TRYOUTS, 9th-12th Grade, Columbus, MT Cosmonaughts, 9th-12th Grade, Columbus, MT TCCS 114, 9th-12th Grade, Tillamook, OR Marvin’s Mighty Martians, 9th-12th Grade, Simms, TX You can see highlights of these teams’ work in the Virtual Recognition Ceremony video on the NESSP YouTube channel. The presentation also features the teams selected to travel to Kennedy Space Center in August of 2025, the ultimate prize for these future space explorers!
In addition to student engagement, the ROADS program provided professional development workshops and NGSS-aligned classroom resources to support K–12 educators. Teachers are invited to explore these materials and register for the next round of workshops, beginning in August 2025: https://nwessp.org/professional-development-registration.
For more information about NESSP, its programs, partners, and the ROADS National Challenge, visit www.nwessp.org or contact info@nwessp.org.
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NASA’s Northwest Earth and Space Science Pathways’ (NESSP) project is supported by NASA cooperative agreement award number 80NSSC22M0006 and is part of NASA’s Science Activation Portfolio. Learn more about how Science Activation connects NASA science experts, real content, and experiences with community leaders to do science in ways that activate minds and promote deeper understanding of our world and beyond: https://science.nasa.gov/learn/about-science-activation/
A water bottle rocket launches into the air carrying its precious chip-stronaut cargo. Share
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Last Updated Jun 23, 2025 Editor NASA Science Editorial Team Related Terms
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By NASA
Explore This Section Earth Earth Observer Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam Announcements More Archives Conference Schedules Style Guide 8 min read
ICESat-2 Applications Team Hosts Satellite Bathymetry Workshop
Introduction
On September 15, 2018, the NASA Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) mission launched from Vandenberg Air Force Base and began its journey to provide spatially dense and fine precision global measurements of our Earth’s surface elevation. Now in Phase E of NASA’s project life cycle (where the mission is carried out, data is collected and analyzed, and the spacecraft is maintained) of the mission and with almost six years of data collection, the focus shifts to looking ahead to new applications and synergies that may be developed using data from ICESat-2’s one instrument: the Advanced Topographic Laster Altimetry System (ATLAS) – see Figure 1.
Figure 1. The ATLAS instrument onboard the ICESat-2 platform obtains data using a green, photon-counting lidar that is split into six beams. Figure credit: ICESat-2 Mission Team Satellite-derived bathymetry (SDB) is the process of mapping the seafloor using satellite imagery. The system uses light penetration and reflection in the water to make measurements and estimate variations in ocean floor depths. SDB provides several advantages over other techniques used to map the seafloor (e.g., cost-effectiveness, global coverage, and faster data acquisition). On the other hand, SDB can be limited by water clarity, spatial resolution of the remote sensing measurement, and accuracy, depending on the method and satellite platform/instrument. These limitations notwithstanding, SDB can be used in a wide variety of applications, e.g., coastal zone management, navigation and safety, marine habitat monitoring, and disaster response. ICESat-2 has become a major contributor to SDB, with over 2000 journal article references to this topic to date. Now is the time to think about the state-of-the-art and additional capabilities of SDB for the future.
To help stimulate such thinking, the NASA ICESat-2 applications team hosted a one-day workshop on March 17, 2025. The workshop focused on the principles and methods for SDB. Held in conjunction with the annual US-Hydro meeting on March 17–20, 2025 at the Wilmington Convention Center in Wilmington, NC, the meeting was hosted by the Hydrographic Society of America. During the workshop the applications team brought together SDB end-users, algorithm developers, operators, and decision makers to discuss the current state and future needs of satellite bathymetry for the community. The objective of this workshop was to provide a space to foster collaboration and conceptualization of SDB applications not yet exploited and to allow for networking to foster synergies and collaborations between different sectors.
Meeting Overview
The workshop provided an opportunity for members from government, academia, and private sectors to share their SDB research, applications, and data fusion activities to support decision making and policy support across a wide range of activities. Presenters highlighted SDB principles, methods, and tools for SDB, an introduction of the new ICESat-2 bathymetric data product (ATL24), which is now available through the National Snow and Ice Data Center (NSIDC). During the workshop, the ICESat-2 team delivered a live demonstration of a web service for science data processing. Toward the end of the day, the applications team opened an opportunity for attendees to gather and discuss various topics related to SDB. This portion of the meeting was also available to online participation via Webex Webinars, which broadened the discussion.
Meeting Goal
The workshop offered a set of plenary presentations and discussions. During the plenary talks, participants provided an overview of Earth observation and SDB principles, existing methods and tools, an introduction to the newest ICESat-2 bathymetry product ATL24, a demonstration of the use of the webservice SlideRule Earth, and opportunities for open discission, asking questions and developing collaborations.
Meeting and Summary Format
The agenda of the SDB workshop was intended to bring together SDB end-users, including ICESat-2 application developers, satellite operators, and decision makers from both government and non-governmental entities to discuss the current state and future needs of the community. The workshop consisted of six sessions that covered various topics of SDB. This report is organized according to the topical focus of the plenary presentations with a brief narrative summary of each presentation included. The discussions that followed were not recorded and are not included in the report. The last section of this report consists of conclusions and future steps. The online meeting agenda includes links to slide decks for many of the presentations.
Welcoming Remarks
Aimee Neeley [NASA’s Goddard Space Flight Center (GSFC)/Science Systems and Applications Inc. (SSAI)—ICESat-2 Mission Applications Lead] organized the workshop and served as the host for the event. She opened the day with a brief overview of workshop goals, logistics, and the agenda.
Overview of Principles of SDB
Ross Smith [TCarta—Senior Geospatial Scientist] provided an overview of the principles of space-based bathymetry, including the concepts, capabilities, limitations, and methods. Smith began by relaying the history of satellite-derived bathymetry, which began with a collaboration between NASA and Jacques Cousteau in 1975, in which Cousteau used Landsat 1 data, as well as in situ data, to calculate bathymetry to a depth of 22 m (72 ft) in the Bahamas. Smith then described the five broad methodologies and their basic concepts for deriving bathymetry from remote sensing: radar altimetry, bottom reflectance, wave kinematics, laser altimetry, and space-based photogrammetry – see Figure 2. He then introduced the broad methodologies, most commonly used satellite sensors, the capabilities and limitations of each sensor, and the role of ICESat-2 in satellite bathymetry.
Figure 2. Satellite platforms commonly used for SDB. Figure credit: Ross Smith Review of SDB Methods and Tools
In this grouping of plenary presentations, representatives from different organizations presented their methods and tools for creating satellite bathymetry products.
Gretchen Imahori [National Oceanic and Atmospheric Administration’s (NOAA) National Geodetic Survey, Remote Sensing Division] presented the NOAA SatBathy (beta v2.2.3) Tool Update. During this presentation, Imahori provided an overview of the NOAA SatBathy desktop tool, example imagery, updates to the latest version, and the implementation plan for ATL24. The next session included more details about ATL24.
Minsu Kim [United States Geological Survey (USGS), Earth Resource and Observation Center (EROS)/ Kellogg, Brown & Root (KBR)—Chief Scientist] presented the talk Satellite Derived Bathymetry (SDB) Using OLI/MSI Based-On Physics-Based Algorithm. He provided an overview of an SDB method based on atmospheric and oceanic optical properties. Kim also shared examples of imagery from the SDB product – see Figure 3.
Figure 3. Three-dimensional renderings of the ocean south of Key West, FL created by adding SDB Digital Elevation Model (physics-based) to a Landsat Operational Land Imager (OLI) scene [top] and a Sentinel-2 Multispectral Imager (MSI) scene [bottom]. Figure credit: Minsu Kim Edward Albada [Earth Observation and Environmental Services GmbH (EOMAP)—Principal] presented the talk Satellite Lidar Bathymetry and EoappTM SLB-Online. The company EOMAP provides various services, including SDB, habitat mapping. For context, Albada provided an overview of EoappTM SDB-Online, a cloud-based software for creating SDB. (EoappTM SDB-online is one of several Eoapp apps and is based on the ICESat-2 photon data product (ATL03). Albada also provided example use cases from Eoapp – see Figure 4.
Figure 4.A display of the Marquesas Keys (part of the Florida Keys) using satellite lidar bathymetry data from the Eoapp SLB-Online tool from EOMAP. Figure credit: Edward Albada Monica Palaseanu-Lovejoy [USGS GMEG—Research Geographer] presented on a Satellite Triangulated Sea Depth (SaTSeaD): Bathymetry Module for NASA Ames Stereo Pipeline (ASP). She provided an overview of the shallow water bathymetry SaTSeaD module, a photogrammetric method for mapping bathymetry. Palaseanu-Lovejoy presented error statistics and validation procedures. She also shared case study results from Key West, FL; Cocos Lagoon, Guam; and Cabo Rojo, Puerto Rico – see Figure 5.
Figure 5. Photogrammetric bathymetry map of Cabo Roja, Puerto Rico displayed using the SatSeaD Satellite Triangulated Sea Depth (SaTSeaD): Bathymetry Module for NASA Ames Stereo Pipeline (ASP) module. Figure credit: Monica Palaseanu-Lovejoy Ross Smith presented a presentation on TCarta’s Trident Tools: Approachable SDB|Familiar Environment. During this presentation, Smith provided an overview of the Trident Tools Geoprocessing Toolbox deployed in Esri’s ArcPro. Smith described several use cases for the toolbox in Abu Dhabi, United Arab Emirates; Lucayan Archipelago, Bahamas; and the Red Sea.
Michael Jasinski [GSFC—Research Hydrologist] presented on The ICESat-2 Inland Water Along Track Algorithm (ATL13). He provided an overview of the ICESat-2 data product ATL13 an inland water product that is distributed by NSIDC. Jasinski described the functionality of the ATL13 semi-empirical algorithm and proceeded to provide examples of its applications with lakes and shallow coastal waters – see Figure 6.
Figure 6. A graphic of the network of lakes and rivers in North America that are measured by ICESat-2. Figure credit: Michael Jasinski ATL24 Data Product Update
Christopher Parrish [Oregon State University, School of Civil and Construction Engineering—Professor] presented on ATL24: A New Global ICESat-2 Bathymetric Data Product. Parrish provided an overview of the recently released ATL24 product and described the ATL24 workflow, uncertainty analysis, and applications in shallow coastal waters. Parrish included a case study where ATL24 data were used for bathymetric mapping of Kiriwina Island, Papua New Guinea – see Figure 7.
Figure 7. ATL24 data observed for Kiriwina Island, Papua New Guinea. Figure credit: Christopher Parrish SlideRule Demo
J. P. Swinski [GSFC—Computer Engineer] presented SlideRule Earth: Enabling Rapid, Scalable, Open Science. Swinski explained that SlideRule Earth is a public web service that provides access to on-demand processing and visualization of ICESat-2 data. SlideRule can be used to process a subset of ICESat-2 data products, including ATL24 – see Figure 8.
Figure 8. ATL24 data observed for Sanibel, FL as viewed on the SlideRule Earth public web client. Figure credit: SlideRule Earth SDB Accuracy
Kim Lowell [University of New Hampshire—Data Analytics Research Scientist and Affiliate Professor] presented on SDB Accuracy Assessment and Improvement Talking Points. During this presentation, Lowell provided examples of accuracy assessments and uncertainty through the comparison of ground measurement of coastal bathymetry to those modeled from satellite data.
Conclusion
The ICESat-2 Satellite Bathymetry workshop fostered discussion and collaboration around the topic of SDB methods. The plenary speakers presented the state-of-the-art methods used by different sectors and organizations, including government and private entities. With the release of ATL24, ICESat-2’s new bathymetry product, it was prudent to have a conversation about new and upcoming capabilities for all methods and measurements of satellite bathymetry. Both in-person and online participants were provided with the opportunity to learn, ask questions, and discuss potential applications in their own research. The ICESat-2 applications team hopes to host more events to ensure the growth of this field to maximize the capabilities of ICESat-2 and other Earth Observing systems.
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Last Updated Jun 05, 2025 Related Terms
Earth Science View the full article
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By European Space Agency
The performance of a lower limb prosthesis has been evaluated in microgravity conditions for the first time during the latest ESA parabolic flight campaign on the ‘Zero G’ aircraft.
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