Tuesday, 11 August 2026

Curiosity Blog, Sols 4968-4974: Rock Climbing Towards the Discontinuity

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Curiosity Blog, Sols 4968-4974: Rock Climbing Towards the Discontinuity

A close-up color photograph taken by the Curiosity rover showing a rough, tan-colored rock surface on Mars. The rock is highly textured, covered in fine parallel layers, small raised ridges, and thin cracks that cast tiny shadows. In the bottom right corner, a small drift of smooth, fine sand rests against the jagged rock.

NASA’s Mars rover Curiosity acquired this image, a frame of the “Longquimay” mosaic showing fine-scale sedimentary textures in a bedrock block near the supersurface, using its Mars Hand Lens Imager (MAHLI), located on the turret at the end of the rover’s robotic arm. Curiosity acquired the image on Aug. 1, 2026 — Sol 4972, or Martian day 4,972 of the Mars Science Laboratory mission — at 23:35:43 UTC.

NASA/JPL-Caltech/MSSS

Written by Lucy Lim, Planetary Scientist at NASA’s Goddard Space Flight Center

Earth planning date: Friday, July 31, 2026

As mentioned in the previous blog, Curiosity has been exploring a large-scale feature in Gale’s sedimentary record suspected to be an “erosional supersurface.” The “supersurface” represents a period in time when a net depositional environment changed to a net erosional one before returning to a depositional regime, thus producing a discontinuity in the rock record. The erosion can involve wind, water, or both. Sometimes there are clues about these environmental changes in the layers below and above the supersurface. So far we’ve been seeing some patterns that look like aeolian features and also some “lens” deposits that sometimes appear consistent with fluvial origins. We need higher-resolution imaging of these features.

This week Curiosity came within detailed imaging range of a section of the “Cerro Paine Grande” vertical exposure just below the candidate supersurface before climbing on top of it. Mastcam was the star of the show on both planning days this week, capturing large stereo mosaics of the vertical face of the outcrop and a 360-degree panorama after the rover climbed on top of it.

A black-and-white photograph taken by the Curiosity rover on Mars. The rover's mechanical arm extends from the left side of the frame toward the center, revealing a complex cluster of scientific instruments at its end. Below the arm, the Martian terrain consists of large, flat slabs of cracked, textured bedrock. The background is filled with scattered, lighter-colored rocks and patches of dark sand with small wind ripples.

NASA’s Mars rover Curiosity acquired this image, showing the rover arm in action in the “Longquimay” workspace at the top of a steep climb. Curiosity captured the image using its Right Navigation Camera on Aug. 2, 2026 — Sol 4972, or Martian day 4,972 of the Mars Science Laboratory mission — at 00:49:52 UTC.

NASA/JPL-Caltech

Roving to the top took full advantage of Curiosity’s climbing capabilities, leaving the rover at an approximate 24-degree tilt in its final parking spot. The rover planners managed to reach the right posture for contact science at the same time — quite a feat, and one that approached the mission’s contact science tilt record of 27 degrees!

Meanwhile, MAHLI and our geochemical instruments provided detailed characterization of the rock layers beneath the discontinuity. I was the Geology and Mineralogy Theme Lead for the Sol 4968 (Monday) planning cycle, during which “Puyehue” in the light-toned bedrock block of the workspace was co-targeted with APXS, MAHLI, and ChemCam LIBS. The other two targeted LIBS observations in the plan went to a similar-looking nearby bedrock block (“Lago Palena”) and an intriguing layered block off to the side of the workspace (“Piedras Juntas”). Another APXS measurement went to a sand target, “Cormudesi,” which will help us assess the consistency of sand compositions along the rover’s traverse.

In the Sol 4972 workspace atop the slope, the bedrock was sharply divided between a smooth bedding-parallel surface on the local top of the outcrop and the darker-toned, rougher, angled exposure of the same rocks. The light-toned top surface was measured by MAHLI, APXS, and the LIBS at target “Sierra de Sangre,” whereas the darker-toned laminated face was targeted by APXS and MAHLI at “Laguna del Laja.” The fine-scale sedimentary structures in the textured material were also documented by a MAHLI mosaic (“Longquimay”) supported by Mastcam M100 imaging.

Rounding out the week’s science observations were several long-distance ChemCam RMI mosaics on more distant targets such as sedimentary structures above the rover’s current stratigraphic position, and finally our regular cadence measurements of the modern Martian environment, including atmospheric opacity and a ChemCam passive-sky survey to monitor abundances of minor atmospheric gases.

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

A rover sits on the hilly, orange Martian surface beneath a flat grey sky, surrounded by chunks of rock.

NASA’s Curiosity rover at the base of Mount Sharp

NASA/JPL-Caltech/MSSS

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Bountiful Roebuck Bay

Blue coastal waters border a fringe of dark green mangroves with branching, linear tidal creeks and pale tidal flats and drainage channels visible to the east.

Water covers intertidal mudflats around Roebuck Bay in Western Australia, as seen in this image captured by the OLI (Operational Land Imager) on Landsat 8 on March 18, 2026.

NASA Earth Observatory / Lauren Dauphin

Editor’s Note: Today’s story is the answer to the August Puzzler.

Tides are among the clearest signs of the Moon’s pull on Earth. Just 239,000 miles (385,000 kilometers) away, the Moon’s gravity pulls on Earth’s oceans and solid crust, subtly distorting them into a more oblong shape with bulges roughly extending toward and away from the Moon.

High tides happen throughout Earth’s oceans, but in some places they leave an unusually strong fingerprint on the landscape. Among those places is Roebuck Bay, a crescent-shaped feature in the Kimberley region of Western Australia.

Roebuck Bay’s tidal range can reach a remarkable 9 meters (30 feet). Rising and falling tides repeatedly inundate and expose expansive mudflats, flood broad mangrove forests and salt marshes, and feed branching networks of tidal drainage channels. Many parts of Australia have tidal ranges of 2 meters or less. But the large range at Roebuck Bay is mostly a consequence of northwestern Australia’s unusually wide, shallow continental shelf, which helps amplify tides as they approach the coast.

The image at the top of the page shows the bay on March 18, 2026, when water levels were high. Green mangrove forests grow thickly along the shoreline and line the mouths of a network of evenly spaced, linear tidal creeks. These mangrove forests are dynamic. Analysis of decades of Landsat observations shows them expanding westward by nearly 2 meters per year as sediment from the waterways to the east accumulates in the sheltered bay.

Farther inland, branching networks of tidal drainage channels connect with the tidal creeks, giving the bay its feathered appearance. These channels, partially obscured by thick vegetation in March, were more visible earlier and later in the year, when vegetation was thinner.

Landsat images from January 29 (left), March 18 (center), and June 30 (right) show seasonal changes. The tide was lower in the January image, exposing tan mudflats along the shoreline.

Around Roebuck Bay, inland vegetation greens after monsoon rains, peaking in March, and turns brown and dry by June. The Landsat 8 and 9 satellites captured these images throughout 2026.

NASA Earth Observatory / Lauren Dauphin

Monsoonal rains, typically falling between December and March, transform the landscape around the bay into lush grasslands and seasonal wetlands. As the rains fade in May and June and the dry season takes hold, these ephemeral grasses and sedge ecosystems die back, turning the landscape shades of gold and brown. The consistent spacing of the tidal creeks is likely not a tidal effect; it appears to be influenced by the regular spacing of linear dunes in the broader region, as seen in the plains to the east.

The bay’s dramatic tidal and seasonal changes are striking from above, and they also support a bounty of life on the ground. The mangroves serve as nurseries for crustaceans and fish, and the mudflats teem with dozens of types of invertebrates, including snails, worms, crabs, clams, and cockles. Shells and snails can reach an abundance of 2,500 per square meter, according to the Australian government.

This bounty of marine life is a major draw for birds. The bay, one of the most important sites for migratory birds in Australia and a key stop on the East Asian-Australasian Flyway, regularly hosts hundreds of thousands of birds, including plovers, godwits, and knots.

NASA Earth Observatory images by Lauren Dauphin, using Landsat data from the U.S. Geological Survey. Story by Adam Voiland.

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Tidal and seasonal shifts leave their mark on this crescent-shaped, productive bay in Western Australia's Kimberley region.

January 29, 2026

JPEG (3.65 MB)

March 18, 2026

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June 20, 2026

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References & Resources

Birdlife International (2026) Roebuck Bay. Accessed August 10, 2026.
Brockmann Consult (2025) Roebuck Bay. Accessed August 10, 2026.
Brocx, M., via Researchgate (2016) Roebuck Plains, north-western Australia – a major Holocene carbonate mud deposit of international geoheritage significance. Accessed August 10, 2026.
Broome Bird Observatory, A Special Place for Birds. Accessed August 10, 2026.
Department of Climate Change, Energy, the Environment and Water (2025, December 15) Roebuck Bay. Accessed August 10, 2026.
Department of Environment and Conservation (2009) Ecological Character Description for Roebuck Bay. Accessed August 10, 2026.
Hickey, R. (2019) Tidal inundation modeling within GIS. Journal of Coastal Conservation, 23, 599–606.
Marine Waters (2020, May 12) Roebuck Bay. Accessed August 10, 2026.
NASA (2019, June 27) More than Naught: The “Z” of Where Land Meets Sea. Accessed August 10, 2026.
NASA Earth Observatory (2016, February 15) Compelling Coastline along Roebuck Bay. Accessed August 10, 2026.
Nanson, R., et al. (2022) Geomorphic insights into Australia’s coastal change using a national dataset derived from the multi-decadal Landsat archive. Estuarine, Coastal and Shelf Science, 265, 107712.
Piersma, T., et al. (2016) Anna Plains and Roebuck Bay Benthic Invertebrate Mapping 2016. AnnRoeBIM16, 96.

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Community College Instructors Bring Astronomy Textbook Into 21st Century

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Community College Instructors Bring Astronomy Textbook Into 21st Century

Classroom with seven students sitting at desks. They have their laptops open showing images of the celestial sphere. On the desks between the students are Earth globes and model celestial spheres.

Students studying the celestial sphere at Jackson College, Michigan.

Credit: Steven Tuckey

Teaching the beautiful and inspirational science of astronomy using only the conceptual framework offered by a traditional textbook – without incorporating the wealth of incredible resources, images and activities from NASA – falls short of the more modern, active learning experience that could better serve students evolving learning strategies. Three project teams from the NASA Science Activation (SciAct) program – NASA Community College Network (NCCN, led by the SETI Institute) and five of their expert community college instructors; Infiniscope (led by Arizona State University, ASU); and NASA Treks – set out to address this challenge.

In June 2026, these teams gathered for a virtual workshop to lay the groundwork for incorporating active learning components drawn from NASA’s extensive education and visualization resource pool and the widely used but traditionally structured OpenStax Astronomy 101 textbook into Relevant Engaging Active Learning (REAL) courseware for introductory Astronomy, while preserving the core content and clear explanatory narrative of the text.

Over the following two weeks, the instructors each adopted one of the opening five chapters of OpenStax, enhancing the content with active learning modules with an emphasis on materials developed by SciAct project teams, such as NASA Treks, Universe of Learning, and Cosmic Data Stories, to name a few. The results of their efforts were presented in a wrap-up presentation in July and will be field-tested in community college classrooms in Fall 2026.

This workshop served as a proof of concept for exploring whether an existing textbook can be effectively adapted into an active learning tool that will enhance students’ understanding of fundamental astronomical concepts. Next steps will include expanding the program and diving back into OpenStax to systematically reimagine the material into an active learning tool that covers the entire book – and therefore, the entire Universe! Importantly, this effort highlights new and highly impactful possibilities for the dissemination of NASA SciAct resources.

Special thanks to the five community college instructors and their invaluable wisdom, experience, and skills: Carver Bierson (Scottsdale Community College, Scottsdale Arizona), Dan Chase (Modesto Community College, Modesto, California), Dennis Just (Pima Community College, Pima, Arizona), Steve Tuckey (Jackson College, Jackson, Michigan) and Sally Watt (Glendale Community College, Glendale, Arizona).

NCCN, Infiniscope, NASA Treks, and many of the projects that contributed learning materials are supported by NASA cooperative agreement awards and are part of the NASA Science Activation Program portfolio, which connects learners with authentic NASA science experiences through partnerships with educators and community organizations.

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Aug 10, 2026

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Monday, 10 August 2026

Launch Into a New School Year With NASA

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Launch Into a New School Year With NASA

An illustration of two astronauts inside a spacecraft, looking at a screen that says "Back to School with NASA"

A new school year brings fresh opportunities to get involved with NASA. Whether you’re curious about space or eager to build real STEM skills, NASA offers a world of experiences putting you close to the action. As we enter a new golden age of exploration, there’s no better time to jump in, try something bold, and see where your curiosity takes you.

Gain Hands-On NASA Experience

NASA opens the door to authentic mission experiences through internships and student challenges. As members of the NASA team, interns work on genuine agency projects and gain industry-ready skills, all with the guidance of NASA mentors. Visit NASA’s internships website to learn more about current vacancies, deadlines, eligibility requirements, and more.

Through NASA’s student challenges and competitions, student teams tackle some of the critical technical hurdles facing mission planners. Flex your innovative muscles and sharpen your collaborative and problem-solving skills while developing, prototyping, and testing your team’s designs. Check out the full list of NASA STEM challenges and opportunities, choose one that fits your interests, and assemble your team.

More than 500 students with 75 teams from around the world participated in the 31st year of NASA’s Human Exploration Rover Challenge (HERC) on April 11 and April 12, 2025, near NASA’s Marshall Space Flight Center in Huntsville, Alabama. Participating teams represented 35 colleges and universities, 38 high schools, and two middle schools from 20 states, Puerto Rico, and 16 other nations. NASA expanded the 2025 challenge to include a remote-control division - named Remote-Operated Vehicular Research - and invited middle school students to participate. Teams were awarded points based on navigating a half-mile obstacle course, conducting mission-specific task challenges, and completing multiple safety and design reviews with NASA engineers.

Students cross the finish line in their human-powered rover during the 2025 Human Exploration Rover Challenge at NASA’s Marshall Space Flight Center in Huntsville, Alabama

USSRC/Emily Riddle

Discover Technical Careers at NASA

The future of aerospace depends on a steady pipeline of skilled technical experts ready to make missions and ideas a reality. NASA invites students in high school, community college, and career technical education programs to join in-person and virtual events to explore these important career paths.

NASA Career Technical Education Days bring students on-site to meet NASA skilled technical workers who share what their jobs are like, how they built their careers, and the skills, training, and certifications that have helped them succeed. During NASA’s Next Gen STEM Virtual Career Connections , students interact live with technical experts supporting the agency’s missions. Students and teachers can learn more on the Next Gen STEM for Careers website.

A technician performs welding on a spacecraft transporter at NASA’s Kennedy Space Center in Florida.

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Contribute to NASA Science as a Citizen Scientist

NASA’s Science Mission Directorate invites you to help make real discoveries through science projects powered by volunteers. Join from anywhere, whenever it fits your schedule, and start working with authentic mission data. Help identify comets and asteroids, hunt for binary star systems, and more. Find the project that’s right for you on the list of current citizen science projects.

Keep Up With NASA Missions and Discoveries

Don’t miss out on NASA’s biggest mission milestones this school year! Up first is the Nancy Grace Roman Space Telescope, scheduled to launch no earlier than 7:20 a.m. EDT on Sunday, Aug. 30. This powerful new observatory has a field of view at least 100 times larger than the Hubble Space Telescope. Be a virtual guest for launch and learn more about the telescope with fun activities provided by NASA’s Science Mission Directorate. You can also sign up to be a virtual guest for NASA’s next crewed launch to the International Space Station, SpaceX Crew-13, set to launch in September.

And be sure to follow NASA’s continuing crew training and hardware preparations for Artemis III. Set to launch into Earth orbit in 2027, the flight will test rendezvous and docking capabilities with commercial human landing systems – landers that will carry astronauts to the lunar surface on Artemis IV and future missions to the Moon.

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Schools, classrooms, and community-based student groups have further options to engage with NASA and its people. Through In-Flight STEM Downlinks, students have their pre-recorded questions answered live by astronauts aboard the International Space Station, demonstrating how STEM careers reach far beyond Earth. Additionally, the NASA Engages public outreach program connects agency experts with student audiences to share mission and science updates, helping people discover how NASA’s work unfolds and how they can be part of the journey.

This school year, whether you’re interested in aerospace jobs or eager to dive into authentic STEM challenges, you’ll find an array of activities and career exploration tools on NASA’s Learning Resources website. Explore exciting NASA student opportunities and subscribe to the weekly NASA EXPRESS email newsletter for the latest NASA STEM opportunities and updates!

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Tuesday, 11 August 2026