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Curiosity Navigation Curiosity Home Mission Overview Where is Curiosity? Mission Updates Science Overview Instruments Highlights Exploration Goals News and Features Multimedia Curiosity Raw Images Images Videos Audio Mosaics More Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions Mars Home 2 min read
Curiosity Blog, Sols 4629-4630: Feeling Hollow
NASA’s Mars rover Curiosity acquired this image of its workspace, including the small crescent-shaped rock named “Wedge Tailed Hillstar,” visible in the image just above the letters “SI” written on Curiosity’s arm. Curiosity captured the image using its Left Navigation Camera on Aug. 13, 2025 — Sol 4628, or Martian day 4,628 of the Mars Science Laboratory mission — at 08:54:46 UTC. NASA/JPL-Caltech Written by Elena Amador-French, Science Operations Coordinator at NASA’s Jet Propulsion Laboratory
Earth planning date: Wednesday, Aug. 13, 2025
Today’s team investigated the texture and chemistry of the bedrock within a topographic low, or hollow, found within the greater boxwork area. We will place our APXS instrument on the “Asiruqucha” target, some light-toned, small-scale nodular bedrock in the middle of our workspace. These data will help illuminate any systematic chemical trends between the hollows and ridges in this area. We always take an associated MAHLI image with every APXS measurement to help contextualize the chemistry. We will also observe a small crescent-shaped rock named “Wedge Tailed Hillstar” with MAHLI, visible in the above Navcam image just above the letters “SI” written on Curiosity’s arm.
We will use our remote sensing instruments to continue documenting the region taking stereo Mastcam images of “Cerro Paranal,” “Rio Frio,” and “Anchoveta.” The ChemCam instrument will take an image of, and collect chemical information for, the target “Camanchaca,” as well as use its Remote Micro Imager (RMI) to take high-resolution imaging of more distant boxwork features.
Once these observations are completed Curiosity will set off on a 30-meter drive (about 98 feet), taking us to an interesting ridge feature to investigate in Friday’s plan.
As usual we will continue to take our regular atmospheric monitoring observations using REMS, RAD, and DAN.
Want to read more posts from the Curiosity team?
Visit Mission Updates
Want to learn more about Curiosity’s science instruments?
Visit the Science Instruments page
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Last Updated Aug 18, 2025 Related Terms
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Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA now is accepting proposals from student teams for a contest to design, build, and test rovers for Moon and Mars exploration through Sept. 15.
Known as the Human Exploration Rover Challenge, student rovers should be capable of traversing a course while completing mission tasks. The challenge handbook has guidelines for remote-controlled and human-powered divisions.
The cover of the HERC 2026 handbook, which is now available online. “Last year, we saw a lot of success with the debut of our remote-controlled division and the addition of middle school teams,” said Vemitra Alexander, the activity lead for the challenge at NASA’s Marshall Space Flight Center in Huntsville, Alabama. “We’re looking forward to building on both our remote-controlled and human-powered divisions with new challenges for the students, including rover automation.”
This year’s mission mimics future Artemis missions to the lunar surface. Teams are challenged to test samples of soil, water, and air from sites along a half-mile course that includes a simulated field of asteroid debris, boulders, erosion ruts, crevasses, and an ancient streambed. Human-powered rover teams will play the role of two astronauts in a lunar terrain vehicle and must use a custom-built task tool to manually collect samples needed for testing. Remote-controlled rover teams will act as a pressurized rover, and the rover itself will contain the tools necessary to collect and test samples onboard.
“NASA’s Human Exploration Rover Challenge creates opportunities for students to develop the skills they need to be successful STEM professionals,” said Alexander. “This challenge will help students see themselves in the mission and give them the hands-on experience needed to advance technology and become the workforce of tomorrow.”
Seventy-five teams comprised of more than 500 students participated in the agency’s 31st rover challenge in 2025. Participants represented 35 colleges and universities, 38 high schools, and two middle schools, across 20 states, Puerto Rico, and 16 nations around the world.
The 32nd annual competition will culminate with an in-person event April 9-11, 2026, at the U.S. Space & Rocket Center near NASA Marshall.
The rover challenge is one of NASA’s Artemis Student Challenges, reflecting the goals of the Artemis campaign, which seeks to explore the Moon for scientific discovery, technology advancement, and to learn how to live and work on another world as we prepare for human missions to Mars. NASA uses such challenges to encourage students to pursue degrees and careers in the fields of science, technology, engineering, and mathematics.
Since its inception in 1994, more than 15,000 students have participated in the rover challenge – with many former students now working at NASA or within the aerospace industry.
To learn more about HERC, visit:
https://www.nasa.gov/roverchallenge/
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Last Updated Aug 15, 2025 EditorBeth RidgewayLocationMarshall Space Flight Center Related Terms
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Curiosity Navigation Curiosity Home Mission Overview Where is Curiosity? Mission Updates Science Overview Instruments Highlights Exploration Goals News and Features Multimedia Curiosity Raw Images Images Videos Audio Mosaics More Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions Mars Home 2 min read
Curiosity Blog, Sols 4627-4628: A Ridge Stop in the Boxworks
NASA’s Mars rover Curiosity acquired this close-up view of the rock target “Bococo” at the intersection of several boxwork ridges, showing bright millimeter-scale nodules likely to be calcium sulfate. Curiosity acquired this image using its Mars Hand Lens Imager (MAHLI), located on the turret at the end of the rover’s robotic arm, which uses an onboard focusing process to merge multiple images of the same target, acquired at different focus positions, to bring all (or, as many as possible) features into focus in a single image. Curiosity performed the merge on Aug. 10, 2025 — Sol 4625, or Martian day 4,625 of the Mars Science Laboratory mission — at 08:00:39 UTC. NASA/JPL-Caltech/MSSS Earth planning date: Monday Aug. 11, 2025
Written by Lucy Lim, Planetary Scientist at NASA’s Goddard Space Flight Center
On the Curiosity team, we’re continuing our exploration of the boxwork-forming region in Gale Crater. A successful 25-meter drive (about 82 feet) brought the rover from the “peace sign” ridge intersection to a new ridge site. Several imaging investigations were pursued in today’s plan, including Mastcam observations of a potential incipient hollow (“Laguna Miniques”), and of a number of troughs to examine how fractures transition from bedrock to regolith.
With six wheels on the ground, Curiosity was also ready to deploy the rover arm for some contact science. APXS and MAHLI measurements were planned to explore the local bedrock at two points with a brushed (DRT) measurement (“Santa Catalina”) and a non-DRT measurement (“Puerto Teresa”). A third MAHLI observation will be co-targeted with one of the LIBS geochemical measurements on a light-toned block, “Palma Seca.” Because we’re in nominal sols for this plan, we were able to plan a second targeted LIBS activity to measure the composition of a high-relief feature on another block, “Yavari” before the drive.
The auto-targeted LIBS (AEGIS) that executed post-drive on sol 4626 had fallen on a bedrock target and will be documented in high resolution via Mastcam imaging.
Two long-distance imaging mosaics were planned for the ChemCam remote imager (RMI): one on a potential scarp and lens in sediments exposed on the “Mishe Mokwa” butte in the strata above the rover’s current position, and the second on an east-facing boxwork ridge with apparently exposed cross-bedding that may be related to the previously explored “Volcán Peña Blanca” ridge.
As usual, the modern Martian environment will also be observed with camera measurements of the atmospheric opacity, a Navcam movie to watch for dust lifting, and the usual REMS and DAN passive monitoring of the temperature, humidity, and neutron flux at the rover’s location.
The next drive is planned to bring us to a spot in a hollow where we hope to plan contact science on the erosionally recessive hollow bedrock in addition to imaging with a good view of the rock layers exposed in the wall of another prominent ridge.
Want to read more posts from the Curiosity team?
Visit Mission Updates
Want to learn more about Curiosity’s science instruments?
Visit the Science Instruments page
NASA’s Mars rover Curiosity at the base of Mount Sharp NASA/JPL-Caltech/MSSS Share
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Last Updated Aug 14, 2025 Related Terms
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By NASA
Curiosity Navigation Curiosity Home Mission Overview Where is Curiosity? Mission Updates Science Overview Instruments Highlights Exploration Goals News and Features Multimedia Curiosity Raw Images Images Videos Audio Mosaics More Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions Mars Home 2 min read
Curiosity Blog, Sols 4624-4626: A Busy Weekend at the Boxwork
NASA’s Mars rover Curiosity captured this image of the three intersecting ridges in front of it this weekend that make a sort of “peace sign” shape. Curiosity acquired the image using its Left Navigation Camera on Aug. 8, 2025 — Sol 4623, or Martian day 4,623 of the Mars Science Laboratory mission — at 06:20:38 UTC. NASA/JPL-Caltech Written by Alex Innanen, Atmospheric Scientist at York University
Earth planning date: Friday, Aug. 8, 2025
We continue to progress through the boxwork structures, arriving today at the “peace sign” ridges we were aiming for in our last drive. We’re spending the first two sols of the weekend at this location, learning everything we can about the boxwork ridges all around us. Then we’re driving further along and spending our third sol at our next location doing a bit more untargeted science.
Our first sol includes three contact science targets, “Palmira,” “Casicasi,” and “Bococo,” which both MAHLI and APXS will be checking out nice and close. ChemCam is also using its LIBS laser to check out Bococo, and taking a mosaic of some more distant boxwork ridges. Not to be left out, Mastcam is taking a mosaic of the intersecting peace-sign-shaped ridges, which have been given the name “Ayopaya,” as well as another mosaic of the edge of one of the nearby ridges. The environmental science group (ENV) is also taking a dust-devil movie and a surpahorizon cloud movie.
On our second sol, ChemCam has another LIBS observation of “Britania.” Mastcam has some more mosaics, today looking back at our wheel tracks to see what we might have turned up on our drive, as well as out to the more distant ridges. We also have another cloud movie coinciding with imaging from above by the CaSSIS camera on board the Trace Gas Orbiter, trying to spot the same clouds from above and below. After our drive Curiosity gets to take a nice long snooze before waking up early for our typical weekend morning ENV block, which includes three different cloud observations (it’s still the cloudy season, after all!) and two observations to look at dust in the crater and in the sky above. Later on this sol ChemCam will use AEGIS to autonomously pick a LIBS target, we’ll have a 360-degree survey to try to catch dust devils. Finally, we’re setting our sights back on the clouds, using cloud shadows on Mount Sharp to estimate cloud altitudes.
Want to read more posts from the Curiosity team?
Visit Mission Updates
Want to learn more about Curiosity’s science instruments?
Visit the Science Instruments page
NASA’s Mars rover Curiosity at the base of Mount Sharp NASA/JPL-Caltech/MSSS Share
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Last Updated Aug 12, 2025 Related Terms
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By NASA
Curiosity Navigation Curiosity Home Mission Overview Where is Curiosity? Mission Updates Science Overview Instruments Highlights Exploration Goals News and Features Multimedia Curiosity Raw Images Images Videos Audio Mosaics More Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions Mars Home 3 min read
Curiosity Blog, Sols 4622-4623: Kicking Off (Earth) Year 14 With an Investigation of Veins
NASA’s Mars rover Curiosity, using its Left Navigation Camera, caught the shadow of the rover’s mast looking ahead to new terrain as the mission started its 14th Earth year on Mars. Curiosity acquired this image on Aug. 6, 2025 — Sol 4621, or Martian day 4,621 of the Mars Science Laboratory mission — at 06:24:09 UTC. NASA/JPL-Caltech Written by Abigail Fraeman, Deputy Project Scientist at NASA’s Jet Propulsion Laboratory
Earth planning date: Wednesday, Aug. 6, 2025.
Today was a very special day for Curiosity as the rover celebrated the start of a 14th year on Mars. Curiosity is currently exploring the mysterious boxwork formations. On Monday, the rover positioned itself at the side of one of the ridges, where the team had spotted tantalizing hints of a complex network of razor-thin veins that may give insight into what is holding the ridges up, compared to the surrounding hollows.
In this plan, the team will use the instruments on Curiosity’s arm and mast to investigate the geometry and composition of these veins to learn more about them. APXS and MAHLI will both observe “Repechón,” a loose block with dark-toned, mottled material exposed on top, as well as “Lago Poopó,” a bright, relatively clean vein network. MAHLI will also collect a side view of “Repechón.” ChemCam will use its laser to analyze two targets, “Vicguna,” a protruding vein edge with nodular texture, and “Ibare,” which has some exposed light-toned veins. Outside of the vein investigation, ChemCam’s telescopic RMI camera will observe layering in a nearby butte and the Mishe Mokwa feature, while Mastcam will take mosaics on “Cachiniba,” a broken block, “Yapacani,” the side of another large boxwork ridge, and “Llullaillaco,” a faraway feature that we imaged from a slightly different location in a previous plan. Additional environmental monitoring observations will round out the plan, followed by a straight-line drive to the east, to an area where several large boxwork ridges intersect that the team has been informally calling “the peace sign” because of its shape.
I usually get nostalgic around landing anniversaries, or “landiversaries,” and this year, I found myself looking back through pictures of landing night. One of my favorites shows me standing next to science team member Kirsten Siebach right after we received the first images from Curiosity. The two of us have the biggest, most excited grins on our faces. We were both graduate students at the time, and both of us were writing thesis chapters analyzing orbital data over regions we hoped to explore with Curiosity one day. I was studying a layer in Mount Sharp that contained hematite, and the team named this feature “Vera Rubin ridge” when Curiosity reached it in 2017. Kirsten, who is now a professor at Rice University, was focused on the boxwork structures, pondering how they formed and hypothesizing what they might tell us about the history of Martian habitability when we reached them.
Thirteen years later, I had another big grin on my face today, as I listened to Kirsten and our incredible science team members excitedly discussing Curiosity’s new images of these same boxwork structures. I was also filled with gratitude for the thousands of people it took to get us to this moment. It was the absolute best way to spend a landiversary.
Learn more about Curiosity’s science instruments
For more Curiosity blog posts, visit MSL Mission Updates
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Last Updated Aug 07, 2025 Related Terms
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