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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
From left, Ramon Pedoto, Nathan Walkenhorst, and Tyrell Jemison review information at NASA’s Marshall Space Flight Center in Huntsville, Alabama. The three team members developed new automation tools at Marshall for flight controllers working with the International Space Station (Credit: NASA/Tyrell Jemison Two new automation tools developed at NASA’s Marshall Space Flight Center in Huntsville, Alabama, are geared toward improving operations for flight controllers working with the International Space Station from the Huntsville Operations Support Center.
The tools, called AutoDump and Permanently Missing Intervals Checker, will free the flight control team to focus on situational awareness, anomaly response, and real-time coordination.
The space station experiences routine loss-of-signal periods based on communication coverage as the space station orbits the Earth. When signal is lost, an onboard buffer records data that could not be downlinked during that period. Following acquisition of signal, flight controllers previously had to send a command to downlink, or “dump,” the stored data.
The AutoDump tool streamlines a repetitive data downlinking command from flight controllers by detecting a routine loss-of-signal, and then autonomously sending the command to downlink data stored in the onboard buffer when the signal is acquired again. Once the data has been downlinked, the tool will automatically make an entry in the console log to confirm the downlink took place.
“Reliably and quickly sending these dump commands is important to ensure that space station payload developers can operate from the most current data,” said Michael Zekoff, manager of Space Systems Operations at Marshall.
As a direct result of this tool, we have eliminated the need to manually perform routine data dump commands by as much as 40% for normal operations.
Michael Zekoff
Space Systems Operations Manager
AutoDump was successfully deployed on Feb. 4 in support of the orbiting laboratory.
The other tool, known as the Permanently Missing Intervals Checker, is another automated process coming online that will improve team efficiency.
Permanently missing intervals are gaps in the data stream where data can be lost due to a variety of reasons, including network fluctuations. The missing intervals are generally short but are documented so the scientific community and other users have confirmation that the missing data is unable to be recovered.
“The process of checking for and documenting permanently missing intervals is challenging and incredibly time-consuming to make sure we capture all the payload impacts,” said Nathan Walkenhorst, a NASA contractor with Bailey Collaborative Solutions who serves as a flight controller specialist.
The checker will allow NASA to quickly gather and assess payload impacts, reduce disruptions to operations, and allow researchers to get better returns on their science investigations. It is expected to be deployed later this year.
In addition to Walkenhorst, Zekoff also credited Ramon Pedoto, a software architect, and Tyrell Jemison, a NASA contractor and data management coordinator with Teledyne Brown Engineering Inc, for their work in developing the automation tools. The development of the tools also requires coordination between flight control and software teams at Marshall, followed by extensive testing in both simulated and flight environments, including spacecraft operations, communications coverage, onboard anomalies, and other unexpected conditions.
“The team solicited broad review to ensure that the tool would integrate correctly with other station systems,” Zekoff said. “Automated tools are evaluated carefully to prevent unintended commanding or other consequences. Analysis of the tools included thorough characterization of the impacts, risk mitigation strategies, and approval by stakeholders across the International Space Station program.”
The Huntsville Operations Support Center provides payload, engineering, and mission operations support to the space station, the Commercial Crew Program, and Artemis missions, as well as science and technology demonstration missions. The Payload Operations Integration Center within the Huntsville Operations Support Center operates, plans, and coordinates the science experiments onboard the space station 365 days a year, 24 hours a day.
For more information on the International Space Station, visit:
www.nasa.gov/international-space-station/
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Last Updated Apr 11, 2025 EditorBeth RidgewayLocationMarshall Space Flight Center Related Terms
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By NASA
After months of groundbreaking research, exploration, and teamwork aboard the International Space Station, NASA’s SpaceX Crew-9 has returned to Earth.
NASA astronauts Nick Hague, Suni Williams, and Butch Wilmore, as well as Roscosmos cosmonaut Aleksandr Gorbunov, splashed down safely on March 18, 2025, as a pod of dolphins circled the Dragon spacecraft near Tallahassee, Florida.
NASA astronauts Nick Hague, Suni Williams, Butch Wilmore, and Roscosmos cosmonaut Aleksandr Gorbunov aboard the SpaceX Dragon spacecraft in the water off the coast of Tallahassee, Florida, March 18, 2025.NASA/Keegan Barber Williams and Wilmore made history as the first humans to fly aboard Boeing’s Starliner spacecraft during NASA’s Boeing Crew Flight Test (CFT). Launched June 5, 2024, aboard a United Launch Alliance Atlas V rocket from Cape Canaveral Space Force Station, the CFT mission was Boeing’s first crewed flight.
Hague and Gorbunov launched to the space station on Sept. 28, 2024, aboard a SpaceX Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida.
NASA’s SpaceX Crew-9 members pose together for a portrait inside the International Space Station’s Unity module. From left, are NASA astronaut Suni Williams, Roscosmos cosmonaut Aleksandr Gorbunov, and NASA astronauts Nick Hague and Butch Wilmore.NASA During their long-duration mission, the American crew members conducted more than 150 unique experiments and logged over 900 hours of research aboard the orbiting laboratory.
Their work included studying plant growth and development, testing stem cell technology for patient care on Earth, and examining how spaceflight affects materials—insights vital for future deep space missions.
The crew kicked off 2025 with two spacewalks that included removing an antenna assembly from the station’s truss, collecting microbial samples from the orbital outpost’s exterior for analysis by Johnson’s Astromaterials Research and Exploration Science division, installing patches to cover damaged areas of light filters on an X-ray telescope, and more.
Williams now holds the record for the most cumulative spacewalking time by a woman — 62 hours and 6 minutes — placing her fourth among the most experienced spacewalkers in history.
While in orbit, the crew also engaged the next generation through 30 ham radio events with students around the world and supported a student-led genetic experiment.
As part of the CFT, Williams and Wilmore commanded Starliner during in-flight testing and were the first to see the spacecraft integrated in simulations and operate it hands-on in space, evaluating systems like maneuvering, docking, and emergency protocols.
“We’ve learned a lot about systems integrated testing that will pay benefits going forward and lay the groundwork for future missions,” said Wilmore.
Suni Williams and Butch Wilmore participate in an emergency operations simulation in the Boeing Starliner simulator at Johnson Space Center in Houston.NASA/Robert Markowitz Following the test flight, NASA and Boeing are continuing work toward crew certification of the company’s CST-100 Starliner system. Joint teams are addressing in-flight anomalies and preparing for propulsion system testing ahead of the next mission.
Despite the unexpected challenges, including technical issues with the Starliner spacecraft that extended their mission, both Wilmore and Williams said they would do it all over again. Wilmore emphasized his gratitude in being part of testing Starliner’s capabilities, stating, “I’d get on it in a heartbeat.”
After returning to Earth, the crew received a warm welcome from family, colleagues, and fellow astronauts at Johnson Space Center’s Ellington Field. They were greeted by Johnson Acting Director Steve Koerner, who applauded their dedication and resilience.
Suni Williams is greeted by Johnson Acting Director Steve Koerner at Ellington Field in Houston after completing a long-duration science mission aboard the International Space Station.NASA/Robert Markowitz Williams shared a heartfelt embrace with astronaut Zena Cardman, thanking her for “taking one for the team.” Cardman had originally been assigned to Crew-9, but in August, NASA announced the uncrewed return of Starliner to Earth and integrated Wilmore and Williams into Expedition 71/72 for a return on Crew-9. This adjustment meant Cardman and astronaut Stephanie Wilson would no longer fly the mission—a decision that underscored the flexibility and teamwork essential to human spaceflight.
Cardman is now assigned as commander of NASA’s SpaceX Crew-11 mission, set to launch in the coming months to the International Space Station for a long-duration science expedition.
Butch Wilmore receives a warm welcome from NASA astronauts Reid Wiseman and Woody Hoburg at Ellington Field.NASA/Robert Markowitz Williams and Wilmore each brought decades of experience to the mission. Wilmore, a retired U.S. Navy captain and veteran fighter pilot, has logged 464 days in space over three flights. Outside of NASA, he serves as a pastor, leads Bible studies, and participates in mission trips across Central and South America. A skilled craftsman, he also builds furniture and other pieces for his local church.
Growing up in Tennessee, Wilmore says his faith continues to guide him, especially when navigating the uncertainties of flight.
Expedition 72 Flight Engineer Butch Wilmore works inside the International Space Station’s Columbus laboratory module to install the European Enhanced Exploration Exercise Device.NASA Wilmore encourages the next generation with a call to action: “Strap on your work hat and let’s go at it!” He emphasizes that tenacity and perseverance are essential for achieving anything of value. Motivated by a sense of patriotic duty and a desire to help those in need, Wilmore sees his astronaut role as a commitment to both his country and humanity at large.
Wilmore believes he’s challenged every day at NASA. “Doing the right things for the right reasons is what motivates me,” he said.
Expedition 72 Commander Suni Williams monitors an Astrobee robotic free-flyer outfitted with tentacle-like arms containing gecko-like adhesive pads preparing to grapple a “capture cube.”NASA A retired U.S. Navy captain and veteran of three spaceflights, Williams is a helicopter pilot, basic diving officer, and the first person to run the Boston Marathon in space—once in 2007, and again aboard the station in 2025. Originally from Needham, Massachusetts, she brings a lifelong spirit of adventure and service to everything she does.
“There are no limits,” said Williams. “Your imagination can make something happen, but it’s not always easy. There are so many cool things we can invent to solve problems—and that’s one of the joys of working in the space program. It makes you ask questions.”
Hague, a Kansas native, has logged a total of 374 days in space across three missions. A U.S. Space Force colonel and test pilot, he’s served in roles across the country and abroad, including a deployment to Iraq.
“When we’re up there operating in space, it’s focused strictly on mission,” said Hague. “We are part of an international team that spans the globe and works with half a dozen mission control centers that are talking in multiple languages — and we figure out how to make it happen. That’s the magic of human spaceflight: it brings people together.”
Expedition 72 Pilot Nick Hague inside the cupola with space botany hardware that supports the Rhodium Plant LIFE investigation.NASA For Williams, Wilmore, Hague, Gorbunov, and the team supporting them, Crew-9 marks the beginning of a new era of space exploration — one driven by innovation, perseverance, and the unyielding dream of reaching beyond the stars.
Watch the full press conference following the crew’s return to Earth here.
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By Space Force
The DoD is offering a path back to service for military personnel who voluntarily separated or left to avoid the COVID-19 vaccination mandate.
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By European Space Agency
The European Space Agency (ESA) has powered down its Gaia spacecraft after more than a decade spent gathering data that are now being used to unravel the secrets of our home galaxy.
On 27 March 2025, Gaia’s control team at ESA’s European Space Operations Centre carefully switched off the spacecraft’s subsystems and sent it into a ‘retirement orbit’ around the Sun.
Though the spacecraft’s operations are now over, the scientific exploitation of Gaia’s data has just begun.
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By Space Force
U.S. Space Force Col. Nick Hague returned to Earth following a six-month mission aboard the International Space Station, March 18, 2025.
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