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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
Sols 4464-4465: Making Good Progress
NASA’s Mars rover Curiosity acquired this image using its Front Hazard Avoidance Camera (Front Hazcam) on Feb. 23, 2025 — sol 4462, or Martian day 4,462 of the Mars Science Laboratory mission — at 21:43:37 UTC. NASA/JPL-Caltech Written by Lauren Edgar, Planetary Geologist at USGS Astrogeology Science Center
Earth planning date: Monday, Feb. 24, 2025
Over the weekend Curiosity drove about 48 meters (about 157 feet) to the southwest, continuing to march along on our traverse past Texoli butte and Gould Mesa. I was on shift as the LTP today, and it was great to see the good drive progress, interesting workspace, and exciting stratigraphy that lies ahead.
Today’s two-sol plan includes contact science and a drive on the first sol, followed by untargeted remote sensing on the second sol. The Geology theme group got straight to work evaluating contact science targets, and decided on a nodular block named “Matilija Poppy” for APXS and MAHLI observations. Then the team turned their attention to the remote sensing activities. There are a variety of interesting rock textures near the rover, so the team spent some time planning Mastcam imaging and ChemCam LIBS activities to assess the diversity. Some blocks have polygonal fractures with raised ridges, while other blocks are more nodular or well-laminated. In addition to looking at the bedrock, Mastcam will document local troughs in the loose sand between blocks, to understand more recent surface processes. The team planned a ChemCam LIBS observation on one of the polygonal fractures at a target named “East Fork” and two long-distance ChemCam RMI mosaics of Gould Mesa to assess the distant stratigraphy. Then Curiosity will drive about 30 meters (about 98 feet) further to the south, and take post-drive imaging to prepare for Wednesday’s plan.
On the second sol Curiosity will take an autonomously selected ChemCam target, along with multiple environmental monitoring observations to search for dust devils, monitor atmospheric dust, and evaluate clouds. It was a pretty smooth day of planning, and it’s always nice to see how the team works together to accomplish a lot of great science. Looking forward to continuing to make great progress as we start climbing uphill again!
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Last Updated Feb 26, 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 2 min read
Sols 4450-4451: Making the Most of a Monday
NASA’s Mars rover Curiosity acquired this image of its brightly lit workspace and its right-front wheel in the shadows, perched on some tall rocks. The rover used its Right Front Hazcam (Front Hazard Avoidance Camera) to capture the image on sol 4449 — or Martian day 4,449 of the Mars Science Laboratory mission — Feb. 10, 2025, at 10:44:45 UTC. NASA/JPL-Caltech Earth planning date: Monday, Feb. 10, 2025
Last Saturday around 20:00 Pacific Standard Time I saw a 22-degree halo encircling our mostly-full Moon and Mars; an entire planet hanging in the sky between our Moon and the atmospheric phenomenon. As I took in the view I wondered what our rover was doing at that moment… turns out the Sun had just risen over Gale crater and Curiosity was still asleep, waiting for her alarm to go off in about 2.5 hours for another full day of science.
She wouldn’t start the weekend’s drive until Monday morning about 1:30, while I was still asleep waiting for my alarm to sound at 5:15. The drive’s data arrived on Earth about 5:30, and told us we drove until our time-of-day limit for driving — stopping about 36 meters (about 118 feet) away from Friday’s location. Unfortunately, our right-front wheel was shown to be perched on some tall rocks and we couldn’t quantify the drop risk if we unstowed the arm. We decided to play it safe and keep the arm stowed instead.
Today’s two-sol plan would normally be in “nominal” sols — meaning we’d get a full day of science and a drive on the second sol — but due to some DSN downtime on Earth we moved our drive to the first sol, therefore switching to “restricted” sols a bit earlier than usual after our last soliday. Even though we couldn’t plan contact science, we’re making the most of our plan with almost 90 minutes of remote sensing. Mastcam will take an approximately 24-frame stereo mosaic of Wilkerson butte to the north, and ChemCam will shoot their laser at a rock in our workspace named “Carbon Canyon,” as well as three separate RMI mosaics! We’ll then attempt to drive until our time-of-day limit of about 15:00 local Gale time, hopefully getting us to a more stable spot on Wednesday for contact science. The second sol contains our usual dust-devil surveys with Navcam, atmospheric opacity measurements with Mastcam, and a blind LIBS on a piece of bedrock the rover chooses autonomously.
Written by Natalie Moore, Mission Operations Specialist at Malin Space Science Systems
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Last Updated Feb 11, 2025 Related Terms
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By European Space Agency
A pair of spacecraft were launched together today from India with the potential to change the nature of future space missions. ESA’s twin Proba-3 platforms will perform precise formation flying down to a single millimetre, as if they were one single giant spacecraft. To demonstrate their degree of control, the pair will produce artificial solar eclipses in orbit, giving prolonged views of the Sun’s ghostly surrounding atmosphere, the corona.
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By European Space Agency
ESA’s eclipse-making precise formation-flying mission is nearly ready for liftoff! Proba-3 is scheduled for launch on a PSLV-XL rocket from Satish Dhawan Space Centre in Sriharikota, India, on Wednesday, 4 December, at 11:38 CET (10:38 GMT, 16:08 local time).
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By NASA
5 Min Read Making Mars’ Moons: Supercomputers Offer ‘Disruptive’ New Explanation
A NASA study using a series of supercomputer simulations reveals a potential new solution to a longstanding Martian mystery: How did Mars get its moons? The first step, the findings say, may have involved the destruction of an asteroid.
The research team, led by Jacob Kegerreis, a postdoctoral research scientist at NASA’s Ames Research Center in California’s Silicon Valley, found that an asteroid passing near Mars could have been disrupted – a nice way of saying “ripped apart” – by the Red Planet’s strong gravitational pull.
The team’s simulations show the resulting rocky fragments being strewn into a variety of orbits around Mars. More than half the fragments would have escaped the Mars system, but others would’ve stayed in orbit. Tugged by the gravity of both Mars and the Sun, in the simulations some of the remaining asteroid pieces are set on paths to collide with one another, every encounter further grinding them down and spreading more debris.
Many collisions later, smaller chunks and debris from the former asteroid could have settled into a disk encircling the planet. Over time, some of this material is likely to have clumped together, possibly forming Mars’ two small moons, Phobos and Deimos.
To assess whether this was a realistic chain of events, the research team explored hundreds of different close encounter simulations, varying the asteroid’s size, spin, speed, and distance at its closest approach to the planet. The team used their high-performance, open-source computing code, called SWIFT, and the advanced computing systems at Durham University in the United Kingdom to study in detail both the initial disruption and, using another code, the subsequent orbits of the debris.
In a paper published Nov. 20 in the journal Icarus, the researchers report that, in many of the scenarios, enough asteroid fragments survive and collide in orbit to serve as raw material to form the moons.
“It’s exciting to explore a new option for the making of Phobos and Deimos – the only moons in our solar system that orbit a rocky planet besides Earth’s,” said Kegerreis. “Furthermore, this new model makes different predictions about the moons’ properties that can be tested against the standard ideas for this key event in Mars’ history.”
Two hypotheses for the formation of the Martian moons have led the pack. One proposes that passing asteroids were captured whole by Mars’ gravity, which could explain the moons’ somewhat asteroid-like appearance. The other says that a giant impact on the planet blasted out enough material – a mix of Mars and impactor debris – to form a disk and, ultimately, the moons. Scientists believe a similar process formed Earth’s Moon.
The latter explanation better accounts for the paths the moons travel today – in near-circular orbits that closely align with Mars’ equator. However, a giant impact ejects material into a disk that, mostly, stays close to the planet. And Mars’ moons, especially Deimos, sit quite far away from the planet and probably formed out there, too.
“Our idea allows for a more efficient distribution of moon-making material to the outer regions of the disk,” said Jack Lissauer, a research scientist at Ames and co-author on the paper. “That means a much smaller ‘parent’ asteroid could still deliver enough material to send the moons’ building blocks to the right place.”
It’s exciting to explore a new option for the making of Phobos and Deimos – the only moons in our solar system that orbit a rocky planet besides Earth’s.
Jacob Kegerreis
Postdoctoral research scientist at NASA’s Ames Research Center
Testing different ideas for the formation of Mars’ moons is the primary goal of the upcoming Martian Moons eXploration (MMX) sample return mission led by JAXA (Japan Aerospace Exploration Agency). The spacecraft will survey both moons to determine their origin and collect samples of Phobos to bring to Earth for study. A NASA instrument on board, called MEGANE – short for Mars-moon Exploration with GAmma rays and Neutrons – will identify the chemical elements Phobos is made of and help select sites for the sample collection. Some of the samples will be collected by a pneumatic sampler also provided by NASA as a technology demonstration contribution to the mission. Understanding what the moons are made of is one clue that could help distinguish between the moons having an asteroid origin or a planet-plus-impactor source.
Before scientists can get their hands on a piece of Phobos to analyze, Kegerreis and his team will pick up where they left off demonstrating the formation of a disk that has enough material to make Phobos and Deimos.
“Next, we hope to build on this proof-of-concept project to simulate and study in greater detail the full timeline of formation,” said Vincent Eke, associate professor at the Institute for Computational Cosmology at Durham University and a co-author on the paper. “This will allow us to examine the structure of the disk itself and make more detailed predictions for what the MMX mission could find.”
For Kegerreis, this work is exciting because it also expands our understanding of how moons might be born – even if it turns out that Mars’ own formed by a different route. The simulations offer a fascinating exploration, he says, of the possible outcomes of encounters between objects like asteroids and planets. These events were common in the early solar system, and simulations could help researchers reconstruct the story of how our cosmic backyard evolved.
This research is a collaborative effort between Ames and Durham University, supported by the Institute for Computational Cosmology’s Planetary Giant Impact Research group. The simulations used were run using the open-source SWIFT code, carried out on the DiRAC (Distributed Research Utilizing Advanced Computing) Memory Intensive service (“COSMA”), hosted by Durham University on behalf of the DiRAC High-Performance Computing facility.
For news media:
Members of the news media interested in covering this topic should reach out to the NASA Ames newsroom.
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Last Updated Nov 20, 2024 Related Terms
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