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By NASA
4 Min Read Science Meets Art: NASA Astronaut Don Pettit Turns the Camera on Science
NASA astronaut Don Pettit is scheduled to return home in mid-April after a seven-month mission aboard the International Space Station as part of Expedition 72. Throughout his stay, Pettit contributed to research that benefits humanity and future space missions.
Pettit also shared what he calls “science of opportunity” to demonstrate how experimenting with our surroundings can help gain a better understanding of how things work. This understanding is perhaps enhanced when art, science, and microgravity come together.
Electrostatic Displays
NASA astronaut Don Pettit demonstrates electrostatic forces using charged water droplets and a knitting needle made of Teflon. This series of overlapping frames displays the unique attraction-repulsion properties of Teflon and charged droplets, similar to how charged particles from the Sun behave when they come in contact with Earth’s magnetic field. Highly energetic particles from space that collide with atoms and molecules in the atmosphere create the aurora borealis.
Specialized Equipment for Superb Science
NASA astronaut Don Pettit snaps an image of the hands of NASA astronauts Nick Hague, left, and Suni Williams inside the Life Science Glovebox, a facility at the International Space Station that separates the science from the scientists, thus protecting both from contamination.
The freezers on the International Space Station are as crucial as its experiment modules, preserving samples for further analysis on Earth. The Minus Eighty-Degree Laboratory Freezer for International Space Station stores samples at ultra-cold temperatures. NASA astronaut Don Pettit used it to freeze thin ice wafers, which he photographed with a polarizing filter to reveal unique crystal structures.
New Tech Roll-Out
NASA astronaut Don Pettit films a time-lapse sequence of Canadarm2 retrieving Materials International Space Station Experiment (MISSE-20-Commercial) samples at the International Space Station. This investigation exposed various experiments to the harsh space environment, such as vacuum, radiation, and extreme temperatures. Findings could help in many areas, from designing more durable materials to advancing quantum communications.
A surge in International Space Station research supports NASA’s exploration efforts at the Moon and beyond, requiring more energy to operate the orbiting laboratory. NASA astronaut Don Pettit photographs new and old solar arrays side by side. The technology used by the International Space Station Roll-Out Solar Arrays (IROSA) on the right was first tested aboard the station in 2017. By 2023, six IROSAs were deployed aboard station, providing a 20-30% increase in power for research and operations. Roll-Out Solar Arrays were also used on NASA’s DART asteroid mission and now are slated for the Gateway lunar outpost, a vital component of Artemis.
Squire for Spacewalks
I am the nameless boy who stays in the confines of the tent helping the Knights suit up for battle. I remain in the airlock, preparing these knights for a walk outside.
Don Pettit
"Space Squire" posted to X
NASA astronaut Don Pettit helped his colleagues suit up for two spacewalks in January. The first spacewalk involved patching the Neutron Star Interior Composition Explorer (NICER), a telescope that measures X-rays from neutron stars and other cosmic objects. Sunlight interference affected data collection, and the patches reduced this issue. On the second spacewalk, astronauts collected samples from the exterior of the International Space Station for ISS External Microorganisms. This investigation examines whether the orbiting laboratory releases microbes, how many, and how far these may travel. Findings could inform the design of future spacecraft, including spacesuits, to limit biocontamination during future space missions.
Photography with a Spin
NASA astronaut Don Pettit photographs “cosmic colors at sunrise.” From 250 miles above, the International Space Station’s orbital path covers most of Earth’s population, offering valuable data and a great opportunity for shooting breathtaking photography.
NASA astronaut Don Pettit leveraged his stay aboard the International Space Station to photograph our planet with an artistic twist.
NASA astronaut Don Pettit wrote on social media about his snapshot of the Mediterranean Sea from the International Space Station, “Sun glint off the Mediterranean Sea (infrared and converted to black and white). When the Sun reflects off the ocean, watery details unseen with normal lighting appear. Small centimeter differences in ocean height become visible, revealing hidden currents.”
NASA astronaut Don Pettit’s photography could contribute to the study of transient luminous events, colorful electrical discharges that occur above thunderstorms. His imagery can be paired with data from the Atmosphere-Space Interactions Monitor (ASIM) and Thor-Davis, a high-speed thunderstorm camera. The combined efforts of crew photography and instruments aboard the International Space Station help scientists better understand thunderstorms and their impacts on Earth’s upper atmosphere.
More of Pettit’s photography can be found on his X profile, @astro_Pettit.
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Last Updated Apr 17, 2025 Related Terms
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By European Space Agency
Video: 00:02:14 On 12 March 2025, ESA’s Hera spacecraft soared just 5000 km above Mars and passed within 300 km of its distant moon, Deimos. Captured by Hera’s 1020x1020 pixel Asteroid Framing Camera, this video sequence offers a rare view of the red planet and its enigmatic moon. The original greyscale images have been colour-enhanced based on known surface features.
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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
3 min read
NASA’s Juno Back to Normal Operations After Entering Safe Mode
NASA’s Juno flies above Jupiter’s Great Red Spot in this artist’s concept. NASA/JPL-Caltech The spacecraft was making its 71st close approach to Jupiter when it unexpectedly entered into a precautionary status.
Data received from NASA’s Juno mission indicates the solar-powered spacecraft went into safe mode twice on April 4 while the spacecraft was flying by Jupiter. Safe mode is a precautionary status that a spacecraft enters when it detects an anomaly. Nonessential functions are suspended, and the spacecraft focuses on essential tasks like communication and power management. Upon entering safe mode, Juno’s science instruments were powered down, as designed, for the remainder of the flyby.
The mission operations team has reestablished high-rate data transmission with Juno, and the spacecraft is currently conducting flight software diagnostics.The team will work in the ensuing days to transmit the engineering and science data collected before and after the safe-mode events to Earth.
Juno first entered safe mode at 5:17 a.m. EDT, about an hour before its 71st close passage of Jupiter — called perijove. It went into safe mode again 45 minutes after perijove. During both safe-mode events, the spacecraft performed exactly as designed, rebooting its computer, turning off nonessential functions, and pointing its antenna toward Earth for communication.
Of all the planets in our solar system, Jupiter is home to the most hostile environment, with the radiation belts closest to the planet being the most intense. Early indications suggest the two Perijove 71 safe-mode events occurred as the spacecraft flew through these belts. To block high-energy particles from impacting sensitive electronics and mitigate the harmful effects of the radiation, Juno features a titanium radiation vault.
Including the Perijove 71 events, Juno has unexpectedly entered spacecraft-induced safe mode four times since arriving at Jupiter in July 2016: first, in 2016 during its second orbit, then in 2022 during its 39th orbit. In all four cases, the spacecraft performed as expected and recovered full capability.
Juno’s next perijove will occur on May 7 and include a flyby of the Jovian moon Io at a distance of about 55,300 miles (89,000 kilometers).
More About Juno
NASA’s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Juno mission for the principal investigator, Scott Bolton, of the Southwest Research Institute in San Antonio. Juno is part of NASA’s New Frontiers Program, which is managed at NASA’s Marshall Space Flight Center in Huntsville, Alabama, for the agency’s Science Mission Directorate in Washington. The Italian Space Agency (ASI) funded the Jovian InfraRed Auroral Mapper. Lockheed Martin Space in Denver built and operates the spacecraft. Various other institutions around the U.S. provided several of the other scientific instruments on Juno.
More information about Juno is available at:
https://www.nasa.gov/juno
News Media Contacts
DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov
Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
Deb Schmid
Southwest Research Institute, San Antonio
210-522-2254
dschmid@swri.org
2025-049
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Last Updated Apr 09, 2025 Related Terms
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