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By NASA
NASA logo. (Credit: NASA) NASA acting Administrator Janet Petro announced Monday Vanessa Wyche will serve as the acting associate administrator for the agency at NASA Headquarters in Washington, effective immediately. Wyche, who had been the director of NASA’s Johnson Space Center in Houston, is detailed as Petro’s senior advisor leading the agency’s center directors and mission directorate associate administrators. She will act as the agency’s chief operating officer for about 18,000 civil servant employees and an annual budget of more than $25 billion. Stephen Koerner will become the acting center director of NASA Johnson.
The agency also named Jackie Jester as associate administrator for the Office of Legislative and Intergovernmental Affairs and announced Catherine Koerner, associate administrator for the agency’s Exploration Systems Development Mission Directorate will retire effective Friday, Feb. 28. Lori Glaze, currently the deputy associate administrator for Exploration Systems Development will become the mission directorate’s acting associate administrator.
“As we continue to advance our mission, it’s crucial that we have strong, experienced leaders in place,” Petro said. “Vanessa will bring exceptional leadership to NASA’s senior ranks, helping guide our workforce toward the opportunities that lie ahead, while Steve will continue to provide steadfast leadership at NASA Johnson. Jackie’s return to the agency will ensure we remain closely aligned with national priorities as we work with Congress. Cathy’s legacy is one of unwavering dedication to human spaceflight, and we are grateful for her years of service. Lori’s leadership will continue to build on that legacy as we push forward in our exploration efforts. These appointments reflect NASA’s unwavering commitment to excellence, and I have full confidence that each of these leaders will carry our vision forward with purpose, integrity, and a relentless drive to succeed.”
Prior to her new role, Wyche was the director NASA Johnson – home to America’s astronaut corps, Mission Control Center, International Space Station, Orion and Gateway Programs, and its more than 11,000 civil service and contractor employees. Her responsibilities included a broad range of human spaceflight activities, including development and operation of human spacecraft, NASA astronaut selection and training, mission control, commercialization of low Earth orbit, and leading NASA Johnson in exploring the Moon and Mars.
During her 35-year career, Wyche has served in several leadership roles, including Johnson’s deputy center director, director of Exploration Integration and Science Directorate, flight manager of several Space Shuttle Program missions, and executive officer in the Office of the Administrator. A native of South Carolina, Wyche earned a Bachelor of Science in Engineering and Master of Science in Bioengineering from Clemson University.
As deputy director of NASA Johnson, Stephen Koerner, oversaw strategic workforce planning, serves as the Designated Agency Safety Health Officer, and supported the Johnson center director in mission reviews. Before his appointment in July 2021, Koerner held various leadership roles at NASA Johnson, including director of the Flight Operations Directorate, associate director, chief financial officer, deputy director of flight operations, and deputy director of mission operations.
In her new role as the associate administrator for the Office of Legislative and Intergovernmental Affairs, Jester will direct a staff responsible for managing and coordinating all communication with the U.S. Congress, as well as serve as a senior advisor to agency leaders on legislative matters.
Jester rejoins the agency after serving as the senior director for government affairs at Relativity Space’s Washington office where she led policy engagement for the company. Prior to her time with Relativity, she served as a policy advisor at NASA and at the White House Office of Science and Technology Policy. She has served as a professional staff member for the U.S. Senate Committee on Commerce, Science, and Transportation. She has spent time in state government as the Chief Legislative Aide to a member of the Massachusetts House of Representatives. Jester has significant experience advising on space policy issues, aviation operations and safety policy, and has helped develop numerous pieces of legislation.
With a 34-year career at NASA, Catherine Koerner has been instrumental in leading NASA’s Exploration Systems Development Mission Directorate, overseeing the development of the agency’s deep space exploration approach. Previously, she was the deputy associate administrator for the mission directorate. Her extensive career at NASA includes roles such as the Orion program manager, director of the Human Health and Performance Directorate, former NASA flight director, several leadership positions within the International Space Station Program during its assembly phase and helping to foster a commercial space industry in low Earth orbit.
Glaze has a distinguished background in planetary science, previously serving as the director of NASA’s Planetary Science Division before joining Explorations Systems Development. Prior to her tenure at NASA Headquarters in Washington, she was the chief of the Planetary Geology, Geophysics and Geochemistry Laboratory at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and the Deputy Director of Goddard’s Solar System Exploration Division. She has been a leading advocate for Venus exploration, serving as the principal investigator for the Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging mission. Glaze earned her Bachelor of Arts and Master of Science degrees in Physics from the University of Texas at Arlington and a doctorate in Environmental Science from Lancaster University in the United Kingdom. Her prior experience includes roles at the Jet Propulsion Laboratory and at Proxemy Research as Vice President and Senior Research Scientist.
For more about NASA’s missions, visit:
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Amber Jacobson / Kathryn Hambleton
Headquarters, Washington
202-358-1600
amber.c.jacobson@nasa.gov / kathryn.a.hambleton@nasa.gov
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By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
During the Apollo program, when NASA sent humans to the Moon, those missions took several days to reach the Moon. The fastest of these was Apollo 8, which took just under three days to go from Earth orbit to orbit around the Moon.
Now it’s possible to save some fuel by flying different kinds of trajectories to the Moon that are shaped in such a way to save fuel. And those trajectories can take more time, potentially weeks or months, to reach the Moon, depending on how you do it.
Mars is further away, about 50 percent further away from the Sun than Earth is. And reaching Mars generally takes somewhere between seven to ten months, flying a relatively direct route.
NASA’s Mars Reconnaissance Orbiter mission took about seven and a half months to reach Mars. And NASA’s MAVEN mission took about ten months to reach Mars.
Jupiter is about five times further away from the Sun than the Earth is. And so in order to make those missions practical, we have to find ways to reduce the fuel requirements. And the way we do that is by having the spacecraft do some flybys of Earth and or Venus to help shape the spacecraft’s trajectory and change the spacecraft’s speed without using fuel. And using that sort of approach, it takes between about five to six years to reach Jupiter.
So NASA’s Galileo mission, the first mission to Jupiter, took just a little over six years. And then NASA’s second mission to Jupiter, which was called Juno, took just under five years.
So to get to the Moon takes several days. To get to Mars takes seven to ten months. And getting to Jupiter takes between five and six years.
[END VIDEO TRANSCRIPT]
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Last Updated Feb 19, 2025 Related Terms
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By European Space Agency
In a landmark achievement, ESA successfully migrated Galileo’s Control Centres in a highly complex operation involving over 200 people from the Agency, industry and EUSPA. This milestone marked the beginning of a global operation to upgrade Galileo’s entire Ground Segment, a vast network of stations spread around the world.
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
This version of a mosaic captured by the star tracker cameras aboard NASA’s Europa Clipper on Dec. 4, 2024, features the names of stars within view of the cameras. NASA/JPL-Caltech This mosaic of a star field was made from three images captured Dec. 4, 2024, by star tracker cameras aboard NASA’s Europa Clipper spacecraft. Showing part of the constel-lation Corvus, it’s the first imagery of space the orbiter has captured since its launch on Oct. 14, 2024.NASA/JPL-Caltech The spacecraft’s star trackers help engineers orient the orbiter throughout its long journey to Jupiter’s icy moon Europa.
Three months after its launch from NASA’s Kennedy Space Center in Florida, the agency’s Europa Clipper has another 1.6 billion miles (2.6 billion kilometers) to go before it reaches Jupiter’s orbit in 2030 to take close-up images of the icy moon Europa with science cameras.
Meanwhile, a set of cameras serving a different purpose is snapping photos in the space between Earth and Jupiter. Called star trackers, the two imagers look for stars and use them like a compass to help mission controllers know the exact orientation of the spacecraft — information critical for pointing telecommunications antennas toward Earth and sending data back and forth smoothly.
In early December, the pair of star trackers (formally known as the stellar reference units) captured and transmitted Europa Clipper’s first imagery of space. The picture, composed of three shots, shows tiny pinpricks of light from stars 150 to 300 light-years away. The starfield represents only about 0.1% of the full sky around the spacecraft, but by mapping the stars in just that small slice of sky, the orbiter is able to determine where it is pointed and orient itself correctly.
The starfield includes the four brightest stars — Gienah, Algorab, Kraz, and Alchiba — of the constellation Corvus, which is Latin for “crow,” a bird in Greek mythology that was associated with Apollo.
Engineers on NASA’s Europa Clipper mission work with the spacecraft’s star trackers in a clean room at the agency’s Jet Propulsion Laboratory in 2022. Used for orienting the spacecraft, the star trackers are seen here with red covers to protect their lenses.NASA/JPL-Caltech Hardware Checkout
Besides being interesting to stargazers, the photos signal the successful checkout of the star trackers. The spacecraft checkout phase has been going on since Europa Clipper launched on a SpaceX Falcon Heavy rocket on Oct. 14, 2024.
“The star trackers are engineering hardware and are always taking images, which are processed on board,” said Joanie Noonan of NASA’s Jet Propulsion Laboratory in Southern California, who leads the mission’s guidance, navigation and control operations. “We usually don’t downlink photos from the trackers, but we did in this case because it’s a really good way to make sure the hardware — including the cameras and their lenses — made it safely through launch.”
Pointing the spacecraft correctly is not about navigation, which is a separate operation. But orientation using the star trackers is critical for telecommunications as well as for the science operations of the mission. Engineers need to know where the science instruments are pointed. That includes the sophisticated Europa Imaging System (EIS), which will collect images that will help scientists map and examine the moon’s mysterious fractures, ridges, and valleys. For at least the next three years, EIS has its protective covers closed.
Europa Clipper carries nine science instruments, plus the telecommunications equipment that will be used for a gravity science investigation. During the mission’s 49 flybys of Europa, the suite will gather data that will tell scientists if the icy moon and its internal ocean have the conditions to harbor life.
The spacecraft already is 53 million miles (85 million kilometers) from Earth, zipping along at 17 miles per second (27 kilometers per second) relative to the Sun, and soon will fly by Mars. On March 1, engineers will steer the craft in a loop around the Red Planet, using its gravity to gain speed.
More About Europa Clipper
Europa Clipper’s three main science objectives are to determine the thickness of the moon’s icy shell and its interactions with the ocean below, to investigate its composition, and to characterize its geology. The mission’s detailed exploration of Europa will help scientists better understand the astrobiological potential for habitable worlds beyond our planet.
Managed by Caltech in Pasadena, California, JPL leads the development of the Europa Clipper mission in partnership with the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, for NASA’s Science Mission Directorate in Washington. APL designed the main spacecraft body in collaboration with JPL and NASA’s Goddard Space Flight Center in Greenbelt, Maryland, NASA’s Marshall Space Flight Center in Huntsville, Alabama, and Langley Research Center in Hampton, Virginia. The Planetary Missions Program Office at Marshall executes program management of the Europa Clipper mission. NASA’s Launch Services Program, based at Kennedy, managed the launch service for the Europa Clipper spacecraft.
Find more information about Europa Clipper here:
https://science.nasa.gov/mission/europa-clipper/
View an interactive 3D model of NASA’s Europa Clipper News Media Contacts
Gretchen McCartney
Jet Propulsion Laboratory, Pasadena, Calif.
818-287-4115
gretchen.p.mccartney@jpl.nasa.gov
Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
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Last Updated Feb 04, 2025 Related Terms
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