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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 The Solar System The Sun Mercury Venus Earth The Moon Mars Jupiter Saturn Uranus Neptune Pluto & Dwarf Planets Asteroids, Comets & Meteors The Kuiper Belt The Oort Cloud 4 min read
Sols 4398-4401: Holidays Ahead, Rocks Under the Wheels
NASA’s Mars rover Curiosity acquired this image using its Left Navigation Camera on Dec. 17, 2024, at 23:24:13 UTC — Sol 4396, or Martian day 4,396, or the Mars Science Laboratory mission. NASA/JPL-Caltech Earth planning date: Wednesday, Dec. 18, 2024
It’s almost holiday time, and preparations are going ahead on Earth and Mars! For myself that means having a packed suitcase sitting behind me to go on my holiday travels tomorrow morning. For Curiosity that means looking forward to a long semi-rest, as we will not do our usual planning for the geology and mineralogy, but will still be monitoring the atmospheric conditions throughout. Today should have been a normal planning day with lots of contact and remote science. Well, Mars had other ideas.
The regular readers of this blog know that we are driving through quite difficult terrain. The image above gives a good impression on what the rover is dealing with: lots of rocks embedded in sand. I think even hiking would be quite difficult there, let alone driving autonomously. Curiosity, thanks to our excellent rover drivers, makes it successfully most of the time, but here and there Mars just doesn’t play nice. Thus, the rover stopped after 14 meters (about 46 feet) of a planned much longer drive. One of the wheels had caught a low spot between two rocks, and — safety first — the rover stopped and waited for our assessment. The rover drivers found no major problem, as it’s just the middle wheel that hit a bit of a rough patch, and driving can continue in this plan. But better safe than sorry, especially on another planet where there are no tow trucks to get us out of difficulty!
There was, however, quite a bit of discussion before we decided that course of action. Not because of the wheels themselves, but because the rover also stands in a position where it can only communicate directly with Earth in limited ways as the antenna is not facing the expected direction after the sudden stop. Of course, we still have the orbiters to talk to our rover, so we know it’s all fine. And — all things are three — this all happened on the penultimate plan of the year! Friday we’ll be planning a large set of sols that the rover will be executing on its own on Mars, monitoring the atmosphere and taking regular images of its surroundings, while the Earth-based team enjoys the well-deserved break. We really want to make sure to have everything going right on a day like today, so we all can enjoy the holidays without worrying about the rover!
With today being the last day of normal science planning, we had lots of ideas, but had to keep the arm stowed. The drive fault also meant that we had to forego arm movements, as the rover was sitting on a few rocks, and one of the wheels in that little depression that stopped us, all in ways that meant that a shift of rover weight (such as occurs when we move the arm) could make the rover move. Avoiding this situation, the team kept the arm stowed and focused on remote observations today. ChemCam observes a vein target called “Monrovia Peak” and takes remote images on the target “Jawbone Canyon” and up Mount Sharp toward the yardang unit. Mastcam looks at the target “Circle X Ranch” to investigate the material around the rocks embedded in the sand, looks at “Anacapa Island,” which is a vein target, “Channel Islands,” which is an aeolian ripple, and target “Gould Mesa,” which gets the team especially excited as this is the first glimpse of the so-called boxwork structures, which we saw from orbit even before Curiosity landed. Finally, we drive away from the spot that held us up today. Let’s hope Mars has read the script this time!
For the looooong break, we are planning autonomous and remote investigations only, and this starts before Friday’s planning, so that we know all is ok! Thus, the other three sols in today’s planning have Aegis, the automated ChemCam LIBS observation, a Mastcam 360° mosaic, and many, many atmospheric observations. It’s going to be a feast for DAN, REMS, and generally the atmospheric science on Mars, while here on Earth we enjoy the treats of the season. The Curiosity team hopes you do, too. See you in 2025!
Written by Susanne Schwenzer, Planetary Geologist at The Open University
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Last Updated Dec 20, 2024 Related Terms
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Preparations for Next Moonwalk Simulations Underway (and Underwater)
The Milky Way pictured from the International Space Station in a long-duration photographCredits: NASA NASA and its commercial partners continue to drive innovation in space exploration, achieving milestones that will ultimately benefit human spaceflight and commercial low Earth orbit efforts. These recent achievements from NASA’s industry partners include completed safety milestones, successful flight tests, and major technological advancements.
“Our commercial partners’ growing capabilities in low Earth orbit underscore NASA’s commitment to advance scientific discovery, pioneering space technology, and support future deep space exploration,” said Angela Hart, manager of the Commercial Low Earth Orbit Development Program at NASA’s Johnson Space Center in Houston.
As NASA expands opportunities in low Earth orbit, the agency is working with seven U.S. companies to meet future commercial and government needs through the second Collaborations for Commercial Space Capabilities initiative.
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Sierra Space’s LIFE (Large Integrated Flexible Environment) habitat following a full-scale ultimate burst pressure test at NASA’s Marshall Space Flight Center in Huntsville, Alabama.Credits: Sierra Space Sierra Space
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Canopy Aerospace also continues development of a 3D-printed, low-density ablator designed to provide thermal protection during extreme heating. The company also worked on other 3D-printed materials, such as aluminum nitride and oxide ceramic products, which could be useful in various applications across the energy, space, aerospace, and industrial sectors, including electromagnetic thrusters for satellites. Canopy Aerospace also developed standard layups of fiber-reinforced composites and integrated cork onto composite panels.
The Cargo Ferry, a reusable cargo transportation vehicle, prototype during a recent high-altitude flight test to test its recovery system and range capabilities.Credits: Outpost Technologies Outpost Technologies
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During the test, the vehicle autonomously flew 165 miles before it was safely recovered at the landing site, demonstrating the system’s reliability. The company’s low-mass re-entry system can protect payload mass and volume for future space cargo return missions and point-to-point delivery.
NASA’s low Earth orbit microgravity strategy builds on the agency’s extensive human spaceflight experience to advance future scientific and exploration goals. As the International Space Station nears the end of operations, NASA plans to transition to a new low Earth orbit model to continue leveraging microgravity benefits. Through commercial partnerships, NASA aims to maintain its leadership in microgravity research and ensure continued benefits for humanity.
Learn more about NASA’s low Earth orbit microgravity strategy at:
https://www.nasa.gov/leomicrogravitystrategy
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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 The Solar System The Sun Mercury Venus Earth The Moon Mars Jupiter Saturn Uranus Neptune Pluto & Dwarf Planets Asteroids, Comets & Meteors The Kuiper Belt The Oort Cloud 4 min read
Sols 4357–4358: Turning West
NASA’s Mars rover Curiosity acquired this image of its middle and right-rear wheels, using its Left Navigation Camera (Navcam). The difference in elevation between these two wheels at this location caused the drive planned on Monday, Nov. 4, 2024, to end early. Curiosity captured the image on Nov. 5, 2024, on sol 4355 — Martian day 4,355 of the Mars Science Laboratory mission — at 23:35:56 UTC. NASA/JPL-Caltech Earth planning date: Wednesday, Nov. 6, 2024
Sols 4357–4358: Turning West
If you’ve ever driven down a road that’s in need of repaving, you’ll know that it can be an uncomfortable experience. The same is true on Mars: even at our carefully slow driving speed, the rough, rocky terrain that we’ve found ourselves in since entering Gediz Vallis many months ago continues to present challenges for our intrepid rover.
Planning today began with the news that Curiosity only made it about halfway to its intended destination from Monday. The drive terminated early after the rover exceeded one of its “suspension limits.” This refers to our “rocker-bogie” suspension system, which allows the rover to drive over obstacles while minimizing the motion experienced by the rover body. In this case, our right middle wheel is down in a trough while the right rear wheel is perched on a rock, causing the angle of the “bogie” connecting the two wheels to exceed the maximum allowed value (Those maximums are set with a healthy amount of safety margin, so we’re not in any danger!). You can see the state of the bogie in the image above. On top of that, ending the drive early also meant that we didn’t have the images that we usually use to determine if the rover is stable enough to unstow the arm, so some creative work was necessary to determine whether or not we could. Unsurprisingly, the verdict was that we shouldn’t do so while in this awkward-looking position.
As always, the team was quick to pivot to a remote sensing plan. The focus today was on getting any last-minute remote observations of the Gediz Vallis channel. This was because we decided that, rather than continuing to drive north, we would be starting our western turn toward the exit out of Gediz Vallis.
The first sol of today’s plan contains a hefty two hours of science activities. These include LIBS observations of a bedrock target “North Dome” and a pair of ChemCam passive rasters of “Jewelry Lake” and “Merced River,” two smaller rocks near the rover, the latter of which appears to have been broken open as the rover drove over it. Mastcam will then take a documentation image of North Dome, as well as a mosaic of some more bedrock at “Earthquake Dome.” This first sol also includes a set of environmental science observations, including a lengthy 30-minute dust devil movie, just over 10 minutes of Navcam cloud movies, and some Navcam monitoring of dust and sand on the rover deck. We also sneak in a Navcam line-of-sight mosaic of the north crater rim, to measure the amount of dust in the air after our drive.
The second sol is a fairly typical post-drive sol, beginning with a standard ChemCam AEGIS activity to let the rover autonomously select a LIBS target. The rest of the science time this sol is dedicated to environmental monitoring, including a Mastcam tau observation to monitor dust, some more Navcam deck monitoring, another Navcam cloud movie, and a 360-degree Navcam dust devil survey. No arm activities means the second sol also includes a Navcam shunt prevention activity (SPENDI) to burn off some extra power while also looking for clouds and dust devils. As always, REMS, RAD, and DAN will continue their standard activities throughout this plan.
When I joined the mission back in 2020, I would occasionally look at Gediz Vallis on our HiRISE maps and imagine what the view would be like between those tall, steep channel walls. So it seems almost unbelievable that we will soon be leaving Gediz Vallis behind us as we continue our trek up Mount Sharp. It will probably still be a few more weeks before we can say that we’ve officially exited Gediz Vallis, but I don’t think anyone will be saying they were disappointed with what we accomplished during this long-anticipated phase of the mission.
Onwards and upwards!
Written by Conor Hayes, graduate student at York University
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Last Updated Nov 08, 2024 Related Terms
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