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By NASA
NASA/JPL-Caltech/MSSS NASA’s Curiosity Mars rover captured this feather-shaped iridescent cloud just after sunset on Jan. 27, 2023. Studying the colors in iridescent clouds tells scientists something about particle size within the clouds and how they grow over time. These clouds were captured as part of a seasonal imaging campaign to study noctilucent, or “night-shining” clouds. A new campaign in January 2025 led to Curiosity capturing this video of red- and green-tinged clouds drifting through the Martian sky.
Learn more about iridescent twilight clouds on Mars.
Image credit: NASA/JPL-Caltech/MSSS
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
A team at JPL packed up three small Moon rovers, delivering them in February to the facility where they’ll be attached to a commercial lunar lander in preparation for launch. The rovers are part of a project called CADRE that could pave the way for potential future multirobot missions.. NASA/JPL-Caltech A trio of suitcase-size rovers and their base station have been carefully wrapped up and shipped off to join the lander that will deliver them to the Moon’s surface.
Three small NASA rovers that will explore the lunar surface as a team have been packed up and shipped from the agency’s Jet Propulsion Laboratory in Southern California, marking completion of the first leg of the robots’ journey to the Moon.
The rovers are part of a technology demonstration called CADRE (Cooperative Autonomous Distributed Robotic Exploration), which aims to show that a group of robots can collaborate to gather data without receiving direct commands from mission controllers on Earth. They’ll use their cameras and ground-penetrating radars to send back imagery of the lunar surface and subsurface while testing out the novel software that enables them to work together autonomously.
The CADRE rovers will launch to the Moon aboard IM-3, Intuitive Machines’ third lunar delivery, which has a mission window that extends into early 2026, as part of NASA’s CLPS (Commercial Lunar Payload Services) initiative. Once installed on Intuitive Machines’ Nova-C lander, they’ll head to the Reiner Gamma region on the western edge of the Moon’s near side, where the solar-powered, suitcase-size rovers will spend the daylight hours of a lunar day (the equivalent of about 14 days on Earth) carrying out experiments. The success of CADRE could pave the way for potential future missions with teams of autonomous robots supporting astronauts and spreading out to take simultaneous, distributed scientific measurements.
Members of a JPL team working on NASA’s CADRE technology demonstration use temporary red handles to move one of the project’s small Moon rovers to prepare it for transport to Intuitive Machines’ Houston facility, where it will be attached to the company’s third lunar lander. Construction of the CADRE hardware — along with a battery of rigorous tests to prove readiness for the journey through space — was completed in February 2024.
To get prepared for shipment to Intuitive Machines’ Houston facility, each rover was attached to its deployer system, which will lower it via tether from the lander onto the dusty lunar surface. Engineers flipped each rover-deployer pair over and attached it to an aluminum plate for safe transit. The rovers were then sealed in protective metal-frame enclosures that were fitted snuggly into metal shipping containers and loaded onto a truck. The hardware arrived safely on Sunday, Feb. 9.
“Our small team worked incredibly hard constructing these robots and putting them to the test, and we have been eagerly waiting for the moment where we finally see them on their way,” said Coleman Richdale, the team’s assembly, test, and launch operations lead at JPL. “We are all genuinely thrilled to be taking this next step in our journey to the Moon, and we can’t wait to see the lunar surface through CADRE’s eyes.”
The rovers, the base station, and a camera system that will monitor CADRE experiments on the Moon will be integrated with the lander — as will several other NASA payloads — in preparation for the launch of the IM-3 mission.
More About CADRE
A division of Caltech in Pasadena, California, JPL manages CADRE for the Game Changing Development program within NASA’s Space Technology Mission Directorate. The technology demonstration was selected under the agency’s Lunar Surface Innovation Initiative, which was established to expedite the development of technologies for sustained presence on the lunar surface. NASA’s Science Mission Directorate manages the CLPS initiative. The agency’s Glenn Research Center in Cleveland and its Ames Research Center in Silicon Valley, California, both supported the project. Motiv Space Systems designed and built key hardware elements at the company’s Pasadena facility. Clemson University in South Carolina contributed research in support of the project.
For more about CADRE, go to:
https://go.nasa.gov/cadre
News Media Contact
Melissa Pamer
Jet Propulsion Laboratory, Pasadena, Calif.
626-314-4928
melissa.pamer@jpl.nasa.gov
2025-018
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Last Updated Feb 11, 2025 Related Terms
CADRE (Cooperative Autonomous Distributed Robotic Exploration) Commercial Lunar Payload Services (CLPS) Earth's Moon Game Changing Development Program Jet Propulsion Laboratory Space Technology Mission Directorate Technology Technology Demonstration Explore More
5 min read NASA’s Curiosity Rover Captures Colorful Clouds Drifting Over Mars
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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
News Media Contacts
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
Dr. Stephanie Getty, director of NASA Goddard’s Solar System Exploration Division, talks about NASA’s DAVINCI (Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging) mission with Dr. Kate Calvin, the agency’s chief scientist.Credits: Courtesy of Stephanie Getty Name: Dr. Stephanie Getty
Title: Director of the Solar System Exploration Division, Sciences and Exploration Directorate and Deputy Principal Investigator of the DAVINCI Mission
Formal Job Classification: Planetary scientist
Organization: Solar System Exploration Division, Sciences and Exploration Directorate (Code 690)
Dr. Stephanie Getty, director of NASA Goddard’s Solar System Exploration Division, poses with a full-scale engineering unit of NASA’s DAVINCI (Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging) descent sphere.Credits: Courtesy of Stephanie Getty What do you do and what is most interesting about your role here at Goddard? How do you help support Goddard’s mission?
As the Director of the Solar System Exploration Division, I work from a place of management to support our division’s scientists. As the deputy principal investigator of the DAVINCI (Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging) mission, I work with the principal investigator to lead the team in implementing this mission to study the atmosphere of Venus.
I love that I get to work from a place of advocacy in support of my truly excellent, talented colleagues. I get to think strategically to make the most of opportunities and do my best to overcome difficulties for the best possible future for our teams. It’s also a fun challenge that no two days are ever the same!
Why did you become a planetary scientist?
In school, I had a lot of interests and space was always one of them. I also loved reading, writing, math, biology, and chemistry. Being a planetary scientist touches on all of these.
My dad inspired me become a scientist because he loved his telescope and photography including of celestial bodies. We watched Carl Sagan’s “Cosmos” often.
I grew up in southeastern Florida, near Fort Lauderdale. I have a B.S. and Ph.D. in physics from the University of Florida.
How did you come to Goddard?
“My goal is to provide a supportive environment for our incredibly talented science community in the Division to thrive, to push discovery forward and improve the understanding of our solar system,” said Dr. Stephanie Getty, director of NASA Goddard’s Solar System Exploration Division. “It’s a priority to encourage effective and open communication.”Credits: Courtesy of Stephanie Getty I had a post-doctoral fellowship in the physics department at the University of Maryland, and a local connection and a suggestion from my advisor led me to Goddard in 2004.
What is most important to you as director of the Solar System Exploration Division, Sciences and Exploration Directorate?
My goal is to provide a supportive environment for our incredibly talented science community in the Division to thrive, to push discovery forward and improve the understanding of our solar system. It’s a priority to encourage effective and open communication. I really try to value the whole person, recognizing that each of us is three-dimensional, with full personal lives. The people create the culture that allows our scientists to thrive and explore.
What are your goals as deputy principal investigator of the DAVINCI mission?
DAVINCI’s goal is to fill long-standing gaps about Venus, including whether it looked more like Earth in the past. Our energetic team brings together science, engineering, technology, project management, and business acumen to build a multi-element spacecraft that will explore Venus above the clouds, and during an hour-long descent through the atmosphere into the searingly hot and high pressure deep layers of the atmosphere near the surface. We hope to launch in June 2029.
What is your proudest accomplishment at Goddard?
I am pleased and proud to be deputy principal investigator on a major mission proposal that now gets to fly. It is an enormous privilege to be entrusted as part of the leadership team to bring the first probe mission back to Venus in over four decades.
What makes Goddard’s culture effective?
Goddard’s culture is at its best when we collectively appreciate how each member of the organization works towards solving our problems. The scientists appreciate the hard, detailed work that the engineers do to make designs. The engineers and project managers are energized by the fundamental science questions that underlie everything we do. And we have brilliant support staff that keeps our team organized and focused.
“Curiosity is a defining characteristic of a good scientist, never losing a sense of wonder,” says Dr. Stephanie Getty, director of NASA Goddard’s Solar System Exploration Division. “When I can, I try to make time to pause to reflect on how beautiful and special our own planet is.”Credits: Courtesy of Stephanie Getty What goes through your mind when you think about which fundamental science question to address and how?
A lot of the research I have done, including my mission work, has been inspired by the question of how life originates, how life originated on Earth, and whether there are or have been other environments in the solar system that could have ever supported life. These questions are profound to any human being. My job allows me to work with incredibly talented teams to make scientific progress on these questions.
It is really humbling.
Who inspired you?
My 10th grade English teacher encouraged us to connect with the natural world and to write down our experiences. Exploring the manifestations of nature connects with the way I approach my small piece of exploring the solar system. I really love the writing parts of my job, crafting the narrative around the science we do and why it is important.
As a mentor, what is the most important lesson you give?
A successful career should reflect both your passion and natural abilities. Know yourself. What feels rewarding to you is important. Learn how to be honest with yourself and let yourself be driven by curiosity.
Our modern lives can be very noisy at work and at home. It can be hard to filter through what is and is not important. Leaving space to connect with the things that satisfy your curiosity can be one way to make the most of the interconnectivity and complexity of life.
Curiosity not only connects us to the natural world, but also to each other. Curiosity is a defining characteristic of a good scientist, never losing a sense of wonder.
I’m looking out my window as we talk. When I can, I try to make time to pause to reflect on how beautiful and special our own planet is.
What are your hobbies?
I love hiking with my kids. Walking through the woods puts me in the moment and clears my mind better than anything else. It gives my brain a chance to relax. Nature gives perspective, it reminds me that I am part of something bigger. Walking in the woods gives me a chance to pause, for example, to notice an interesting rock formation, or watch a spider spinning an impressive web, or spot a frog trying to camouflage itself in a pond, and doing this with my children is my favorite pastime.
Where is your favorite place in the world?
Any campsite at dusk with a fire going and eating s’mores with my family.
Conversations With Goddard is a collection of Q&A profiles highlighting the breadth and depth of NASA’s Goddard Space Flight Center’s talented and diverse workforce. The Conversations have been published twice a month on average since May 2011. Read past editions on Goddard’s “Our People” webpage.
By Elizabeth M. Jarrell
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Last Updated Feb 10, 2025 Related Terms
Goddard Space Flight Center DAVINCI (Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging) People of Goddard Planetary Science Division Science Mission Directorate The Solar System Explore More
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By NASA
The ring of light surrounding the center of the galaxy NGC 6505, captured by ESA’s Euclid telescope, is an example of an Einstein ring. NGC 6505 is acting as a gravitational lens, bending light from a galaxy far behind it. ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre, G. Anselmi, T. Li; CC BY-SA 3.0 IGO or ESA Standard Licence Euclid, an ESA (European Space Agency) mission with NASA contributions, has made a surprising discovery in our cosmic backyard: a phenomenon called an Einstein ring.
An Einstein ring is light from a distant galaxy bending to form a ring that appears aligned with a foreground object. The name honors Albert Einstein, whose general theory of relativity predicts that light will bend and brighten around objects in space.
In this way, particularly massive objects like galaxies and galaxy clusters serve as cosmic magnifying glasses, bringing even more distant objects into view. Scientists call this gravitational lensing.
Euclid Archive Scientist Bruno Altieri noticed a hint of an Einstein ring among images from the spacecraft’s early testing phase in September 2023.
“Even from that first observation, I could see it, but after Euclid made more observations of the area, we could see a perfect Einstein ring,” Altieri said. “For me, with a lifelong interest in gravitational lensing, that was amazing.”
The ring appears to encircle the center of a well-studied elliptical galaxy called NGC 6505, which is around 590 million light-years from Earth in the constellation Draco. That may sound far, but on the scale of the entire universe, NGC 6505 is close by. Thanks to Euclid’s high-resolution instruments, this is the first time that the ring of light surrounding the galaxy has been detected.
Light from a much more distant bright galaxy, some 4.42 billion light-years away, creates the ring in the image. Gravity distorted this light as it traveled toward us. This faraway galaxy hasn’t been observed before and doesn’t yet have a name.
“An Einstein ring is an example of strong gravitational lensing,” explained Conor O’Riordan, of the Max Planck Institute for Astrophysics, Germany, and lead author of the first scientific paper analyzing the ring. “All strong lenses are special, because they’re so rare, and they’re incredibly useful scientifically. This one is particularly special, because it’s so close to Earth and the alignment makes it very beautiful.”
Einstein rings are a rich laboratory for scientists to explore many mysteries of the universe. For example, an invisible form of matter called dark matter contributes to the bending of light into a ring, so this is an indirect way to study dark matter. Einstein rings are also relevant to the expansion of the universe because the space between us and these galaxies — both in the foreground and the background — is stretching. Scientists can also learn about the background galaxy itself.
“I find it very intriguing that this ring was observed within a well-known galaxy, which was first discovered in 1884,” said Valeria Pettorino, ESA Euclid project scientist. “The galaxy has been known to astronomers for a very long time. And yet this ring was never observed before. This demonstrates how powerful Euclid is, finding new things even in places we thought we knew well. This discovery is very encouraging for the future of the Euclid mission and demonstrates its fantastic capabilities.”
A close-up view of the center of the NGC 6505 galaxy, with the bright Einstein ring aligned with it, captured by ESA’s Euclid space telescope.ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre, G. Anselmi, T. Li; CC BY-SA 3.0 IGO or ESA Standard Licence By exploring how the universe has expanded and formed over its cosmic history, Euclid will reveal more about the role of gravity and the nature of dark energy and dark matter. Dark energy is the mysterious force that appears to be causing the universe’s expansion. The space telescope will map more than a third of the sky, observing billions of galaxies out to 10 billion light-years. It is expected to find around 100,000 strong gravitational lenses.
“Euclid is going to revolutionize the field with all this data we’ve never had before,” added O’Riordan.
Although finding this Einstein ring is an achievement, Euclid must look for a different, less visually obvious type of gravitational lensing called “weak lensing” to help fulfil its quest of understanding dark energy. In weak lensing, background galaxies appear only mildly stretched or displaced. To detect this effect, scientists will need to analyze billions of galaxies.
Euclid launched from Cape Canaveral, Florida, July 1, 2023, and began its detailed survey of the sky Feb. 14, 2024. The mission is gradually creating the most extensive 3D map of the universe yet. The Einstein ring find so early in its mission indicates Euclid is on course to uncover many more secrets of the universe.
More About Euclid
Euclid is a European mission, built and operated by ESA, with contributions from NASA. The Euclid Consortium — consisting of more than 2,000 scientists from 300 institutes in 15 European countries, the United States, Canada, and Japan — is responsible for providing the scientific instruments and scientific data analysis. ESA selected Thales Alenia Space as prime contractor for the construction of the satellite and its service module, with Airbus Defence and Space chosen to develop the payload module, including the telescope. Euclid is a medium-class mission in ESA’s Cosmic Vision Programme.
Three NASA-supported science teams contribute to the Euclid mission. In addition to designing and fabricating the sensor-chip electronics for Euclid’s Near Infrared Spectrometer and Photometer (NISP) instrument, NASA’s Jet Propulsion Laboratory led the procurement and delivery of the NISP detectors as well. Those detectors, along with the sensor chip electronics, were tested at NASA’s Detector Characterization Lab at Goddard Space Flight Center in Greenbelt, Maryland. The Euclid NASA Science Center at IPAC (ENSCI), at Caltech in Pasadena, California, will archive the science data and support U.S.-based science investigations. JPL is a division of Caltech.
Media Contacts
Elizabeth Landau
Headquarters, Washington
202-358-0845
elandau@nasa.gov
Calla Cofield
Jet Propulsion Laboratory, Pasadena, Calif.
626-808-2469
calla.e.cofield@jpl.nasa.gov
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