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Ed Stone, Former Director of JPL and Voyager Project Scientist, Dies
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA Energy Program Manager for Facility Projects Wayne Thalasinos, left, stands with NASA Stennis Sustainability Team Lead Alvin Askew at the U.S. Department of Energy in Washington, D.C., on Oct. 30. The previous day, the Department of Energy announced NASA Stennis will receive a $1.95 million grant for an energy conservation project at the south Mississippi center. The Stennis Sustainability Team consists of NASA personnel and contract support. NASA members include Askew, Missy Ferguson and Teenia Perry. Contract members include Jordan McQueen (Synergy-Achieving Consolidated Operations and Maintenance); Michelle Bain (SACOM); Matt Medick (SACOM); Thomas Mitchell (SACOM); Lincoln Gros (SACOM), and Erik Tucker (Leidos). NASA Stennis NASA’s Stennis Space Center has been awarded a highly competitive U.S. Department of Energy grant to transform its main administration building into a facility that produces as much renewable energy as it uses.
Following an Oct. 29 announcement, NASA Stennis, located near Bay St. Louis, Mississippi, will receive $1.95 million through the Assisting Federal Facilities with Energy Conservation Technologies (AFFECT) Program. The grant will fund installation of a four-acre solar panel array onsite that can generate up to 1 megawatt of electricity.
“This is a flagship project for our NASA center,” said NASA Stennis Director John Bailey. “It will provide renewable energy to help reduce our carbon footprint, contributing to NASA’s agencywide goal of zero greenhouse gas emissions by 2030.”
The AFFECT Program awards grants to help the federal government achieve its goal of net-zero greenhouse gas emissions by all federal buildings by 2045. More than $1 billion in funding proposals was requested by federal agencies for the second, and final, phase of the initiative. A total of $149.87 million subsequently was awarded for 67 energy conservation and clean energy projects at federal facilities across 28 U.S. states and territories and in six international locations. NASA Stennis is the only agency in Mississippi to receive funding.
The site’s solar panel array will build on an $1.65 million energy conservation project already underway at the south Mississippi site to improve energy efficiency. The solar-generated electricity can be used in a number of ways, from powering facility lighting to running computers. The array also will connect to the electrical grid to allow any excess energy to be utilized elsewhere onsite.
“This solar panel addition will further enhance our energy efficiency,” said NASA Stennis Sustainability Team Lead Alvin Askew. “By locating the solar photovoltaic array by the Emergency Operations Center, it also has potential future benefits in providing backup power to that facility during outages.”
The NASA Stennis proposal was one of several submitted by NASA centers for agency consideration. Following an agency review process, NASA submitted multiple projects to the Department of Energy for grant consideration.
“This was a very competitive process, and I am proud of the NASA Stennis Sustainability Team,” NASA Stennis Center Operations Director Michael Tubbs said. “The team’s hard work in recent years and its commitment to continuous improvement in onsite energy conversation laid the groundwork to qualify for this grant. Mr. Askew, in particular, continues to be a leader in creative thinking, helping us meet agency sustainability goals.”
The NASA Stennis administration building was constructed in 2008 as a Leadership in Energy and Environmental Design-certified, all-electric facility and currently has net-zero emissions.
For information about NASA’s Stennis Space Center, visit:
https://www.nasa.gov/stennis
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Last Updated Nov 14, 2024 EditorNASA Stennis CommunicationsContactC. Lacy Thompsoncalvin.l.thompson@nasa.gov / (228) 688-3333LocationStennis Space Center Related Terms
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By NASA
JPL is a research and development lab federally funded by NASA and managed by Caltech. NASA/JPL-Caltech Workforce statement and memo to employees
JPL statement issued on Nov. 12, 2024:
While we have taken various measures to meet our current FY’25 budget allocation, we have reached the difficult decision to reduce the JPL workforce through layoffs. This reduction affects approximately 325 of our colleagues, an impact of about 5% of our workforce. The impacts are occurring across technical, business, and support areas of the Laboratory. These are painful but necessary adjustments that will enable us to adhere to our budget while continuing our important work for NASA and our nation.
The following is a memo sent earlier today from JPL Director Laurie Leshin to employees:
Dear Colleagues,
This is a message I had hoped not to have to write. I’m reaching out to share the difficult news that JPL will be taking a workforce action tomorrow, Nov. 13, resulting in a layoff of approximately 325 of our colleagues, or ~5% of our workforce. Despite this being incredibly difficult for our community, this number is lower than projected a few months ago thanks in part to the hard work of so many people across JPL. The workforce assessment conducted as part of this process has been both extensive and thorough, and although we can never have perfect insight into the future, I sincerely believe that after this action we will be at a more stable workforce level moving forward.
How we got here:
During our last town hall, I discussed our continued funding challenges and projections of what the potential impact on our workforce could look like. I shared that we had been working through multiple workforce scenarios to address the dynamic funding environment, and that we have been doing everything we can, in partnership with our colleagues at NASA and elsewhere, to minimize adverse effects on JPL’s capabilities and team.
Unfortunately, despite all these efforts, we need to make one further workforce reduction to meet the available funding for FY’25. This reduction is spread across essentially all areas of the Lab including our technical, project, business, and support areas. We have taken seriously the need to re-size our workforce, whether direct-funded (project) or funded on overhead (burden). With lower budgets and based on the forecasted work ahead, we had to tighten our belts across the board, and you will see that reflected in the layoff impacts.
As part of our workforce assessment and determining where reductions are being made, we have taken time to complete a full review of our competencies, future mission needs, and we have established guidance for our core capabilities across the Laboratory. We have worked closely with the Executive Council, division managers, project leadership and others to ensure we maintain the appropriate levels of technical expertise, capacity for innovation, and ability to deliver on an exciting future for JPL. Our focus will continue to be on empowering managers to support their teams through this action and equipping all of us with a variety of resources as we move forward together.
Here are the details about what will happen tomorrow:
Unless notified otherwise, all employees are required to work from home tomorrow Nov. 13, regardless of their telework status. Tomorrow you will be invited to a short, virtual, Lab-wide meeting with myself and Deputy Director Leslie Livesay at 9:30 a.m. We will relay the details of where we are in the process and what to expect. Please look out for the meeting notification that will follow this memo. There will not be organization-level notification meetings as in February. This one meeting will provide the information needed for the entire Lab at once.
Our approach is to prioritize notifying everyone via email as quickly as possible whether their role is being affected by the layoff or not. Then we can rapidly shift to providing personalized support to our laid-off colleagues who are part of the workforce reduction, including offering dedicated time to discuss their benefits, and several other forms of assistance. Because of system limitations, the individual email notifications will take place over several hours tomorrow. A schedule of the notifications, which will occur by organization, will be shared in the virtual briefing tomorrow morning and also posted on JPL Space, the JPL HR Website, and Slack. You can also find answers to Frequently Asked Questions (FAQs) on our website here.
Our JPL Community:
I know the absence of our colleagues will be acutely felt, especially after a very challenging year for the Lab. To those leaving JPL as a result of this action, we are grateful for your many vital contributions to JPL and to NASA. We will be here to support you during this time to ensure this transition is as smooth as possible.
To reiterate to you all, I believe this is the last cross-Lab workforce action we will need to take in the foreseeable future. After this action, we will be at about 5,500 JPL regular employees. I believe this is a stable, supportable staffing level moving forward. While we can never be 100% certain of the future budget, we will be well positioned for the work ahead. This may not help much in this difficult moment, but I do want to be crystal clear with my thoughts and perspective. If we hold strong together, we will come through this, just as we have done during other turbulent times in JPL’s nearly 90-year history. Finally, even though the coming leadership transition at NASA may introduce both new uncertainties and new opportunities, this action would be happening regardless of the recent election outcome.
While I know many of us are feeling anger or disappointment with this news, I encourage everyone to act with grace and empathy toward one another, and to lean on each other for support. I will be speaking with you again very soon to discuss our path ahead. Until then, know that we are an incredibly strong organization – our dazzling history, current achievements, and relentless commitment to exploration and discovery position us well for the future.
Laurie
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Last Updated Nov 12, 2024 Related Terms
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By NASA
Vanessa Wyche, director of NASA’s Johnson Space Center provides an update on Exploration Park on Feb. 15, 2022, at the ASCENDxTexas conference at South Shore Harbor Resort and Conference Center. Credit: NASA / Josh Valcarcel Nov. 12, 2024
Director Vanessa Wyche of NASA’s Johnson Space Center in Houston will join Texas A&M University leaders and guests Friday, Nov. 15, to break ground for the new Texas A&M University Space Institute.
U.S. media interested in participating in person must contact the NASA Johnson newsroom no later than 5 p.m. Wednesday, Nov. 13, by calling 281-483-5111 or emailing: jsccommu@mail.nasa.gov. NASA’s media accreditation policy is available online.
The groundbreaking is planned for 10 a.m. CST Nov. 15, at Johnson Space Center’s Exploration Park. Additional participants will include:
Greg Bonnen, Texas House of Representatives, chairman of House Appropriations Committee William Mahomes, Jr., Board of Regents chairman, Texas A&M University System John Sharp, chancellor Texas A&M University System General (Ret.) Mark Welsh III, president, Texas A&M University Robert H. Bishop, vice chancellor and dean, Texas A&M Engineering Nancy Currie-Gregg, director, Texas A&M University Space Institute Robert Ambrose, associate director for space and robotics initiatives, Texas A&M Engineering Experiment Station The institute, funded through a $200 million initial investment from the State of Texas, will support research for civilian, defense and commercial space missions as part of NASA Johnson’s Exploration Park. Key features will include the world’s largest indoor simulation spaces for lunar and Mars surface operations, state-of-the-art high-bay laboratories, and multifunctional project rooms.
The Texas A&M Space Institute is set to open in Summer 2026.
NASA is leasing the 240-acre Exploration Park to create facilities that enable a collaborative development environment, increase commercial access, and enhance the United States’ commercial competitiveness in the space and aerospace industries.
To learn more about NASA Johnson and the Texas A&M University Space Institute, visit:
https://www.nasa.gov/nasas-johnson-space-center-hosts-exploration-park
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Kelly Humphries
Johnson Space Center, Houston
281-483-5111
kelly.o.humphries@nasa.gov
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA’s Voyager 2 captured this image of Uranus while flying by the ice giant in 1986. New research using data from the mission shows a solar wind event took place during the flyby, leading to a mystery about the planet’s magnetosphere that now may be solved.NASA/JPL-Caltech NASA’s Voyager 2 flyby of Uranus decades ago shaped scientists’ understanding of the planet but also introduced unexplained oddities. A recent data dive has offered answers.
When NASA’s Voyager 2 spacecraft flew by Uranus in 1986, it provided scientists’ first — and, so far, only — close glimpse of this strange, sideways-rotating outer planet. Alongside the discovery of new moons and rings, baffling new mysteries confronted scientists. The energized particles around the planet defied their understanding of how magnetic fields work to trap particle radiation, and Uranus earned a reputation as an outlier in our solar system.
Now, new research analyzing the data collected during that flyby 38 years ago has found that the source of that particular mystery is a cosmic coincidence: It turns out that in the days just before Voyager 2’s flyby, the planet had been affected by an unusual kind of space weather that squashed the planet’s magnetic field, dramatically compressing Uranus’ magnetosphere.
“If Voyager 2 had arrived just a few days earlier, it would have observed a completely different magnetosphere at Uranus,” said Jamie Jasinski of NASA’s Jet Propulsion Laboratory in Southern California and lead author of the new work published in Nature Astronomy. “The spacecraft saw Uranus in conditions that only occur about 4% of the time.”
The first panel of this artist’s concept depicts how Uranus’s magnetosphere — its protective bubble — was behaving before the flyby of NASA’s Voyager 2. The second panel shows an unusual kind of solar weather was happening during the 1986 flyby, giving scientists a skewed view of the magnetosphere.NASA/JPL-Caltech Magnetospheres serve as protective bubbles around planets (including Earth) with magnetic cores and magnetic fields, shielding them from jets of ionized gas — or plasma — that stream out from the Sun in the solar wind. Learning more about how magnetospheres work is important for understanding our own planet, as well as those in seldom-visited corners of our solar system and beyond.
That’s why scientists were eager to study Uranus’ magnetosphere, and what they saw in the Voyager 2 data in 1986 flummoxed them. Inside the planet’s magnetosphere were electron radiation belts with an intensity second only to Jupiter’s notoriously brutal radiation belts. But there was apparently no source of energized particles to feed those active belts; in fact, the rest of Uranus’ magnetosphere was almost devoid of plasma.
The missing plasma also puzzled scientists because they knew that the five major Uranian moons in the magnetic bubble should have produced water ions, as icy moons around other outer planets do. They concluded that the moons must be inert with no ongoing activity.
Solving the Mystery
So why was no plasma observed, and what was happening to beef up the radiation belts? The new data analysis points to the solar wind. When plasma from the Sun pounded and compressed the magnetosphere, it likely drove plasma out of the system. The solar wind event also would have briefly intensified the dynamics of the magnetosphere, which would have fed the belts by injecting electrons into them.
The findings could be good news for those five major moons of Uranus: Some of them might be geologically active after all. With an explanation for the temporarily missing plasma, researchers say it’s plausible that the moons actually may have been spewing ions into the surrounding bubble all along.
Planetary scientists are focusing on bolstering their knowledge about the mysterious Uranus system, which the National Academies’ 2023 Planetary Science and Astrobiology Decadal Survey prioritized as a target for a future NASA mission.
JPL’s Linda Spilker was among the Voyager 2 mission scientists glued to the images and other data that flowed in during the Uranus flyby in 1986. She remembers the anticipation and excitement of the event, which changed how scientists thought about the Uranian system.
“The flyby was packed with surprises, and we were searching for an explanation of its unusual behavior. The magnetosphere Voyager 2 measured was only a snapshot in time,” said Spilker, who has returned to the iconic mission to lead its science team as project scientist. “This new work explains some of the apparent contradictions, and it will change our view of Uranus once again.”
Voyager 2, now in interstellar space, is almost 13 billion miles (21 billion kilometers) from Earth.
News Media Contacts
Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
Gretchen McCartney
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-6215
gretchen.p.mccartney@jpl.nasa.gov
2024-156
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Last Updated Nov 11, 2024 Related Terms
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By NASA
This archival photo shows engineers working on NASA’s Voyager 2 spacecraft on March 23, 1977. NASA/JPL-Caltech NASA’s Voyager mission launched in the 1970s. Today, it’s making history as it conducts new science. But how are two spacecraft from the ’70s not just surviving, but thriving farther out in space than any other spacecraft has been before?
A Little Mission Background
Voyager is a NASA mission made up of two different spacecraft, Voyager 1 and 2, which launched to space on Sept. 5, 1977, and Aug. 20, 1977, respectively. In the decades following launch, the pair took a grand tour of our solar system, studying Jupiter, Saturn, Uranus, and Neptune — one of NASA’s earliest efforts to explore the secrets of the universe. These twin probes later became the first spacecraft to operate in interstellar space — space outside the heliosphere, the bubble of solar wind and magnetic fields emanating from the Sun. Voyager 1 was the first to enter interstellar space in 2012, followed by Voyager 2 in 2018.
Today, Voyager continues not just because it can, but because it still has work to do studying interstellar space, the heliosphere, and how the two interact. “We wouldn’t be doing Voyager if it wasn’t taking science data,” said Suzanne Dodd, the mission’s current project manager and the director for the Interplanetary Network at NASA’s Jet Propulsion Laboratory.
But across billions of miles and decades of groundbreaking scientific exploration, this trailblazing interstellar journey has not been without its trials. So, what’s the Voyager secret to success?
In short: preparation and creativity.
As NASA’s two Voyager spacecraft travel out into deep space, they carry a small American flag and a Golden Record packed with pictures and sounds — mementos of our home planet. This picture shows John Casani, Voyager project manager in 1977, holding a small Dacron flag that was folded and sewed into the thermal blankets of the Voyager spacecraft before they launched 36 years ago. Below him lie the Golden Record (left) and its cover (right). In the background stands Voyager 2 before it headed to the launch pad. The picture was taken at Cape Canaveral, Fla., on Aug. 4, 1977. NASA/JPL-Caltech We Designed Them Not to Fail
According to John Casani, Voyager project manager from 1975 to launch in 1977, “we didn’t design them to last 30 years or 40 years, we designed them not to fail.”
One key driver of the mission’s longevity is redundancy. Voyager’s components weren’t just engineered with care, they were also made in duplicate.
According to Dodd, Voyager “was designed with nearly everything redundant. Having two spacecraft — right there is a redundancy.”
“We didn’t design them to last 30 years or 40 years, we designed them not to fail.”
John Casani
Voyager Project Manager, 1975-1977
A Cutting-Edge Power Source
The twin Voyager spacecraft can also credit their longevity to their long-lasting power source.
Each spacecraft is equipped with three radioisotope thermoelectric generators. These nuclear “batteries” were developed originally by the U.S. Department of Energy as part of the Atoms for Peace program enacted by President Eisenhower in 1955. Compared to other power options at the time — like solar power, which doesn’t have the reach to work beyond Jupiter — these generators have allowed Voyager to go much farther into space.
Each of NASA’s Voyager probes are equipped with three radioisotope thermoelectric generators (RTGs), including the one shown here at NASA’s Kennedy Space Center in Florida. The RTGs provide power for the spacecraft by converting the heat generated by the decay of plutonium-238 into electricity. Launched in 1977, the Voyager mission is managed for NASA by the agency’s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California.
NASA/JPL-Caltech Voyager’s generators continue to take the mission farther than any before, but they also continue to generate less power each year, with instruments needing to be shut off over time to conserve power.
Creative Solutions
As a mission that has operated at the farthest edges of the heliosphere and beyond, Voyager has endured its fair share of challenges. With the spacecraft now in interstellar space running on software and hardware from the 1970s, Voyager’s problems require creative solutions.
Retired mission personnel who worked on Voyager in its earliest days have even come back out of retirement to collaborate with new mission personnel to not just fix big problems but to pass on important mission know-how to the next generation of scientists and engineers.
“From where I sit as a project manager, it’s really very exciting to see young engineers be excited to work on Voyager. To take on the challenges of an old mission and to work side by side with some of the masters, the people that built the spacecraft,” Dodd said. “They want to learn from each other.”
After receiving data about the health and status of Voyager 1 for the first time in five months, members of the Voyager flight team celebrate in a conference room at NASA’s Jet Propulsion Laboratory on April 20. Credit: NASA/JPL-Caltech NASA/JPL-Caltech Within just the last couple of years, Voyager has tested the mission team’s creativity with a number of complex issues. Most recently, the thrusters on Voyager 1’s thrusters, which control the spacecraft’s orientation and direction, became clogged. The thrusters allow the spacecraft to point their antennae and are critical to maintaining communications with Earth. Through careful coordination, the mission team was able to remotely switch the spacecraft to a different set of thrusters.
These kinds of repairs are extra challenging as a radio signal takes about 22 ½ hours to reach Voyager 1 from Earth and another 22 ½ hours to return. Signals to and from Voyager 2 take about 19 hours each way.
Voyager’s Interstellar Future
This brief peek behind the curtain highlights some of Voyager’s history and its secrets to success.
The Voyager probes may continue to operate into the late 2020s. As time goes on, continued operations will become more challenging as the mission’s power diminishes by 4 watts every year, and the two spacecraft will cool down as this power decreases. Additionally, unexpected anomalies could impact the mission’s functionality and longevity as they grow older.
As the mission presses on, the Voyager team grows this legacy of creative problem solving and collaboration while these twin interstellar travelers continue to expand our understanding of the vast and mysterious cosmos we inhabit.
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