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By NASA
NASA Technicians do final checks on NASA’s Spirit rover in this image from March 28, 2003. The rover – and its twin, Opportunity – studied the history of climate and water at sites on Mars where conditions may once have been favorable to life. Each rover is about the size of a golf cart and seven times heavier (about 405 pounds or 185 kilograms) than the Sojourner rover launched on the Mars Pathfinder to Mars mission in 1996.
Spirit and Opportunity were sent to opposite sides of Mars to locations that were suspected of having been affected by liquid water in the past. Spirit was launched first, on June 10, 2003. Spirit landed on the Martian surface on Jan. 3, 2004, about 8 miles (13.4 kilometers) from the planned target and inside the Gusev crater. The site became known as Columbia Memorial Station to honor the seven astronauts killed when the space shuttle Columbia broke apart Feb. 1, 2003, as it returned to Earth. The plaque commemorating the STS-107 Space Shuttle Columbia crew can be seen in the image above.
Spirit operated for 6 years, 2 months, and 19 days, more than 25 times its original intended lifetime, traveling 4.8 miles (7.73 kilometers) across the Martian plains.
Image credit: NASA
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By NASA
NASA’s Space X Crew-9 members pose together for a portrait.Credit: NASA Students from Ohio and Texas will have the chance to hear NASA astronauts aboard the International Space Station answer their prerecorded questions this week.
At 12:55 p.m. EST, Wednesday, March 5, NASA astronauts Suni Williams, Nick Hague, Butch Wilmore, and Don Pettit will respond to questions submitted by students from Puede Network, in partnership with The Achievery in Dallas.
At 10:30 a.m., Thursday, March 6, a separate call with NASA astronauts Williams, Hague, and Wilmore, will answer questions posed by students at Saint Ambrose Catholic School in Brunswick, Ohio.
Watch the 20-minute space-to-Earth calls on NASA+. Learn how to watch NASA content on various platforms, including social media.
The Puede Network, a Dallas-based youth organization, is collaborating with the Achievery, an online platform for connecting students with digital learning opportunities. Media interested in covering the event must RSVP by 5 p.m. Tuesday, March 4 to Rodrigo Oshiro at: rodrigo@happytogether.studio or +54 9 113068 7121.
Saint Ambrose Catholic School, part of Saint Ambrose Catholic Church, is a preschool through 8th grade school focused on science, technology, engineering, arts, and mathematics. Media interested in covering the event must RVSP by 5 p.m., Wednesday, March 5 to Breanne Logue at: BLogue@StASchool.us or 330-460-7318.
For more than 24 years, astronauts have continuously lived and worked aboard the space station, testing technologies, performing science, and developing skills needed to explore farther from Earth. Astronauts aboard the orbiting laboratory communicate with NASA’s Mission Control Center in Houston 24 hours a day through SCaN’s (Space Communications and Navigation) Near Space Network.
Important research and technology investigations taking place aboard the space station benefit people on Earth and lays the groundwork for other agency missions. As part of NASA’s Artemis campaign, the agency will send astronauts to the Moon to prepare for future human exploration of Mars, inspiring Artemis Generation explorers and ensuring the United States continues to lead in space exploration and discovery.
See videos and lesson plans highlighting space station research at:
https://www.nasa.gov/stemonstation
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Abbey Donaldson
Headquarters, Washington
202-358-1600
abbey.a.donaldson@nasa.gov
Sandra Jones
Johnson Space Center, Houston
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sandra.p.jones@nasa.gov
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Last Updated Mar 03, 2025 EditorJessica TaveauLocationNASA Headquarters Related Terms
In-flight Education Downlinks For Colleges & Universities Learning Resources Outside the Classroom View the full article
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By NASA
5 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
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NASA’s Curiosity Mars rover captured these drifting noctilucent, or twilight, clouds in a 16-minute recording on Jan. 17. (This looping clip has been speeded up about 480 times.) The white plumes falling out of the clouds are carbon dioxide ice that would evaporate closer to the Martian surface.NASA/JPL-Caltech/MSSS/SSI While the Martian clouds may look like the kind seen in Earth’s skies, they include frozen carbon dioxide, or dry ice.
Red-and-green-tinted clouds drift through the Martian sky in a new set of images captured by NASA’s Curiosity rover using its Mastcam — its main set of “eyes.” Taken over 16 minutes on Jan. 17 (the 4,426th Martian day, or sol, of Curiosity’s mission), the images show the latest observations of what are called noctilucent (Latin for “night shining”), or twilight clouds, tinged with color by scattering light from the setting Sun.
Sometimes these clouds even create a rainbow of colors, producing iridescent, or “mother-of-pearl” clouds. Too faint to be seen in daylight, they’re only visible when the clouds are especially high and evening has fallen.
Martian clouds are made of either water ice or, at higher altitudes and lower temperatures, carbon dioxide ice. (Mars’ atmosphere is more than 95% carbon dioxide.) The latter are the only kind of clouds observed at Mars producing iridescence, and they can be seen near the top of the new images at an altitude of around 37 to 50 miles (60 to 80 kilometers). They’re also visible as white plumes falling through the atmosphere, traveling as low as 31 miles (50 kilometers) above the surface before evaporating because of rising temperatures. Appearing briefly at the bottom of the images are water-ice clouds traveling in the opposite direction roughly 31 miles (50 kilometers) above the rover.
Dawn of Twilight Clouds
Twilight clouds were first seen on Mars by NASA’s Pathfinder mission in 1997; Curiosity didn’t spot them until 2019, when it acquired its first-ever images of iridescence in the clouds. This is the fourth Mars year the rover has observed the phenomenon, which occurs during early fall in the southern hemisphere.
Mark Lemmon, an atmospheric scientist with the Space Science Institute in Boulder, Colorado, led a paper summarizing Curiosity’s first two seasons of twilight cloud observations, which published late last year in Geophysical Research Letters. “I’ll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact,” he said. “Now it’s become so predictable that we can plan our shots in advance; the clouds show up at exactly the same time of year.”
Each sighting is an opportunity to learn more about the particle size and growth rate in Martian clouds. That, in turn, provides more information about the planet’s atmosphere.
Cloud Mystery
One big mystery is why twilight clouds made of carbon dioxide ice haven’t been spotted in other locations on Mars. Curiosity, which landed in 2012, is on Mount Sharp in Gale Crater, just south of the Martian equator. Pathfinder landed in Ares Vallis, north of the equator. NASA’s Perseverance rover, located in the northern hemisphere’s Jezero Crater, hasn’t seen any carbon dioxide ice twilight clouds since its 2021 landing. Lemmon and others suspect that certain regions of Mars may be predisposed to forming them.
A possible source of the clouds could be gravity waves, he said, which can cool the atmosphere: “Carbon dioxide was not expected to be condensing into ice here, so something is cooling it to the point that it could happen. But Martian gravity waves are not fully understood and we’re not entirely sure what is causing twilight clouds to form in one place but not another.”
Mastcam’s Partial View
The new twilight clouds appear framed in a partially open circle. That’s because they were taken using one of Mastcam’s two color cameras: the left 34 mm focal length Mastcam, which has a filter wheel that is stuck between positions. Curiosity’s team at NASA’s Jet Propulsion Laboratory in Southern California remains able to use both this camera and the higher-resolution right 100 mm focal length camera for color imaging.
The rover recently wrapped an investigation of a place called Gediz Vallis channel and is on its way to a new location that includes boxwork — fractures formed by groundwater that look like giant spiderwebs when viewed from space.
More recently, Curiosity visited an impact crater nicknamed “Rustic Canyon,” capturing it in images and studying the composition of rocks around it. The crater, 67 feet (20 meters) in diameter, is shallow and has lost much of its rim to erosion, indicating that it likely formed many millions of years ago. One reason Curiosity’s science team studies craters is because the cratering process can unearth long-buried materials that may have better preserved organic molecules than rocks exposed to radiation at the surface. These molecules provide a window into the ancient Martian environment and how it could have supported microbial life billions of years ago, if any ever formed on the Red Planet.
More About Curiosity
Curiosity was built by NASA’s Jet Propulsion Laboratory, which is managed by Caltech in Pasadena, California. JPL leads the mission on behalf of NASA’s Science Mission Directorate in Washington. Malin Space Science Systems in San Diego built and operates Mastcam.
For more about Curiosity, visit:
science.nasa.gov/mission/msl-curiosity
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Andrew Good
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-2433
andrew.c.good@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 11, 2025 Related Terms
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By NASA
You would not expect to see NASA at a car show—but that’s exactly where Johnson Space Center employees were from Jan. 29 to Feb. 2, 2025, driving the future of space exploration forward.
At the Houston AutoBoative Show, a fusion of the auto and boat show, NASA rolled out its Artemis exhibit at NRG Center for the first time, introducing motor enthusiasts to the technologies NASA and commercial partners will use to explore more of the lunar surface than ever before.
Johnson Space Center employees present the Artemis exhibit at the 2025 Houston AutoBoative Show at NRG Center.NASA/Robert Markowitz The Artemis exhibit stood alongside some of the world’s most advanced cars and boats, offering visitors an up-close look at lunar terrain vehicle mockups from Astrolab, Intuitive Machines, and Lunar Outpost. Later this year, NASA will select the rover that will fly to the Moon as humanity prepares for the next giant leap.
In addition to the rovers, the exhibit featured a mockup of JAXA’s (Japan Aerospace Exploration Agency) pressurized rover, designed as a mobile habitat for astronauts, and Axiom Space’s lunar spacesuit, developed for Artemis III astronauts.
These capabilities will allow astronauts to explore, conduct science research, and live and work on the lunar surface.
Strategic Communications Manager for NASA’s Extravehicular Activity and Human Surface Mobility Program Tim Hall (right) shows Johnson Director Vanessa Wyche and Johnson External Relations Office Director Arturo Sanchez the Artemis booth. NASA/Robert Markowitz Johnson Director Vanessa Wyche visited the Artemis exhibit to highlight the importance of these technologies in advancing lunar exploration. Every lesson learned on the Moon will help scientists and engineers develop the strategies, technologies, and experience needed to send astronauts to Mars.
“By bringing the excitement of lunar exploration to the AutoBoative Show, NASA aims to inspire the next generation of explorers to dream bigger, push farther, and help shape humanity’s future in space,” Wyche said.
NASA’s Artemis campaign is setting the stage for long-term human exploration, working with commercial and international partners to establish a sustained presence on the Moon before progressing to Mars.
To make this vision a reality, NASA is developing rockets, spacecraft, landing systems, spacesuits, rovers, habitats, and more.
Vanessa Wyche views Axiom Space’s lunar spacesuit at the exhibit. NASA/Robert Markowitz Some of the key elements on display at the show included:
The Orion spacecraft – Designed to take astronauts farther into deep space. Orion will launch atop NASA’s Space Launch System (SLS) rocket, carrying the crew to the Moon on Artemis missions and safely returning them to Earth. Lunar terrain vehicles – Developed to transport astronauts across the rugged lunar surface or be remotely operated. NASA recently put these rover mockups to the test at Johnson, where astronauts and engineers, wearing spacesuits, ran through critical maneuvers, tasks, and emergency drills—including a simulated crew rescue. Next-gen spacesuits and tools – Through Johnson’s Extravehicular Activity and Human Surface Mobility Program, astronauts’ gear and equipment are designed to ensure safety and efficiency while working on the Moon’s surface. NASA’s Orion Program Strategic Communications Manager Radislav Sinyak (left) and Orion Communications Strategist Erika Peters guide Vanessa Wyche through navigating the Orion spacecraft to dock with the lunar space station Gateway.NASA/Robert Markowitz Guests had the chance to step into the role of an astronaut with interactive experiences like:
Driving a lunar rover simulator – Testing their skills at the wheel of a virtual Moon rover. Practicing a simulated Orion docking – Experiencing the precision needed to connect to Gateway in lunar orbit. Exploring Artemis II and III mission roadmaps – Learning about NASA’s upcoming missions and goals.
Attendees also discovered how American companies are delivering science and technology to the Moon through NASA’s Commercial Lunar Payload Services initiative.
Johnson employees from the Orion program showcase the Orion simulator at the exhibit. From left: Orion Crew and Service Module Office Crew Systems Manager Paul Boehm, Lead Admin Dee Maher, and Orion Crew and Service Module Integration Lead Mark Cavanaugh. From right: Vanessa Wyche, Erika Peters, and Radislav Sinyak.NASA/Robert Markowitz “Everyone can relate to exploration, so it was great to teach people the importance lunar rovers will have on astronauts’ abilities to explore more of the lunar surface while conducting science,” said Victoria Ugalde, communications strategist for the Extravehicular Activity and Human Surface Mobility Program, who coordinated the lunar rovers’ appearance at the show.
Check out the rovers contracted to develop lunar terrain vehicle capabilities below.
Vanessa Wyche explores Intuitive Machines’ Moon RACER rover mockup. NASA/Robert Markowitz Vanessa Wyche explores Lunar Outpost’s Eagle rover mockup. NASA/Robert Markowitz Vanessa Wyche explores Astrolab’s FLEX rover mockup. NASA/Robert Markowitz View the full article
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By European Space Agency
After years of meticulous development, ESA’s next Earth Explorer satellite, Biomass, is ready to be packed up for transport to Europe’s Spaceport in French Guiana, where it will launch aboard a Vega-C rocket this spring.
Before final preparations and shipment, media representatives had the exclusive opportunity today to see the satellite up close in the cleanroom at Airbus’ facilities in Toulouse, France.
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