Link to full resolution image LINK
Credits: NASA/JPL-Caltech/MSSS/Kevin M. Gill
Curiosity Rover Mission Update - Sol 4370-4371: All About the Polygons. Earth planning date: Wednesday November 20, 2024.
We planned two very full sols today! The sol 4369 drive completed successfully, and the rover was in a stable enough position that we could unstow the arm — something we don’t take for granted in the exceedingly rocky terrain of the sulfate unit! Today the team decided to investigate several rocks in our workspace that are covered in cracks, or fractures, that form polygonal patterns. We are interested to better characterize the geometry of these cracks and to see if they are associated with any compositional differences from the rock. Both pieces of information will give us clues about how they formed. Did they form when stresses pushed on the rock in just the right manner to fracture it into polygonal shapes? Or do the cracks record the rock expanding and contracting, either due to massive changes in temperatures on the Martian surface, or minerals within the rock gaining and losing water? Or perhaps it is something different?
We selected two contact science targets to investigate in our attempt to answer these questions. The target named “Buttermilk” is one of the skinny raised ridges associated with these cracks. We will be placing APXS at three different places over this feature to try to characterize its chemistry. Our second contact science target, “Lee Vining,” gives us a nice 3D view into these cracks. Here, we will collect two MAHLI mosaics, one on each side of the rock that’s close to the rover, to characterize the geometry of the fractures. ChemCam will also get in on the action with a LIBS observation on a fracture fill named “Crater Crest,” as well as an observation on a dark-toned, platy rock called “Lost Arrow.” Mastcam will collect observations of several more polygonally fractured rocks further away from Curiosity in “The Dardanelles” series of mosaics. Some environmental science observations will round out the plan before our drive will take us about 25 meters further (about 82 feet) to the southwest.
Written by Abigail Fraeman, Planetary Geologist at NASA's Jet Propulsion Laboratory
Source for this blog and the archive of all blogs (with all the links and the original raw images etc) https://science.nasa.gov/blog/sol-4370-4371-all-about-the-polygons/
These blog updates are provided by self-selected Mars Science Laboratory mission team members who love to share what Curiosity is doing with the public.
Dates of planned rover activities described in these reports are subject to change due to a variety of factors related to the Martian environment, communication relays and rover status.
Image credits: NASA/JPL-Caltech/MSSS/fredk
In recent days Curiosity rover has been investigating several rocks within the rover's workspace that are covered in cracks, or fractures, that form polygonal patterns. The science team are interested to better characterize the geometry of these cracks and to see if they are associated with any compositional differences from the rock. The data obtained will give them clues about how they formed. Did they form when stresses pushed on the rock in just the right manner to fracture it into polygonal shapes? Or do the cracks record the rock expanding and contracting, either due to massive daily changes in temperatures on the Martian surface, or minerals within the rock gaining and losing water? Or perhaps it is something different? The composite image attached is assembled from a set of overlapping mast camera images from sol 4368, that were first Bayer reconstructed. Zoom in to see the fine details. Image credits: NASA/JPL-Caltech/MSSS/fredk
The camera standoff was ~25 centimeters (~10 inches).
A 25 cm standoff provides an image scale of ~95 micrometers per image pixel, or a scene height of ~15 centimeters (~6 inches), width ~45 cm (~18")
4789 x 1748 pixels
Image Credits: NASA/JPL-Caltech/MSSS.
Curiosity rover used one of its Mast Camera to capture this last look at a section of the field of bright white sulfur stones before leaving Gediz Vallis channel. The field was where the rover made the first discovery of pure sulfur on Mars by driving over a rock and cracking it open to reveal the yellow crystals inside. Scientists are still unsure exactly why these pure sulfur rocks formed here. This composite is made up of several overlapping images captured on October 11, 2024 (Sol 4331). Image Credit: NASA/JPL-Caltech/MSSS
Curiosity Rover Mission Update - Sols 4368-4369: The Colors of Fall – and Mars. Earth planning date: Monday November 18, 2024.
I am in the U.K., where we are approaching the time when trees are just branches and twigs. One tree that still has its full foliage is my little quince tree in my front garden. Its leaves have turned reddish-brown with a hint of orange, fairly dark by now, and when I passed it this afternoon on my way to my Mars operations shift, I thought that these leaves have exactly the colors of Mars! And sure enough, today’s workspace is full of bedrock blocks in the beautiful reddish-brown that we love from Mars. But like that tree, it’s not just one color, but many different versions and patterns, all of many reddish-brown and yellowish-brown colors.
The tree theme continues into the naming of our targets today, with ChemCam observing the target “Big Oak Flat,” which is a flat piece of bedrock with a slightly more gray hue to it. “Calaveras,” in contrast, looks a lot more like my little tree, as it is more reddish and less gray. It’s also a bedrock target, and APXS and MAHLI are observing this target, too. APXS has another bedrock target, called “Murphys” on one of the many bedrock pieces around. MAHLI is of course documenting Murphys, too. Let’s just hope that this target name doesn’t get any additions to it but instead returns perfect data from Mars!
ChemCam is taking several long-distance remote micro-imager images — one on the Gediz Vallis Ridge, and one on target “Mono Lake,” which is also looking at the many, many different textures and stones in our surroundings. The more rocks, the more excited a team of geologists gets! So, we are surely using every opportunity to take images here!
Talking about images… Mastcam is taking documentation images on the Big Oak Flat and Calaveras targets, and a target simply called “trough.” In addition, there are mosaics on “Basket Dome” and “Chilkoot,” amounting to quite a few images of this diverse and interesting terrain! More images will be taken by the navigation cameras for the next drive — and also our Hazcam. We rarely talk about the Hazcams, but they are vital to our mission! They look out from just under the rover belly, forward and backward, and have the important task to keep our rover safe. The forward-looking one is also great for planning purposes, to know where the arm can reach with APXS, MAHLI, and the drill. To me, it’s also one of the most striking perspectives, and shows the grandeur of the landscape so well. If you want to see what I am talking about, have a look at “A Day on Mars” from January of this year.
Of course, we have atmospheric measurements in the plan, too. The REMS sensor is measuring temperature and wind throughout the plan, and Curiosity will be taking observations to search for dust devils, and look at the opacity of the atmosphere. Add DAN to the plan, and it is once again a busy day for Curiosity on the beautifully red and brown Mars. And — hot off the press — all about another color on Mars: yellowish-white!
Written by Susanne Schwenzer, Planetary Geologist at The Open University
Source for this blog and the archive of all blogs (with all the links and the original raw images etc) https://science.nasa.gov/blog/sols-4368-4369-the-colors-of-fall-and-mars/
These blog updates are provided by self-selected Mars Science Laboratory mission team members who love to share what Curiosity is doing with the public.
Dates of planned rover activities described in these reports are subject to change due to a variety of factors related to the Martian environment, communication relays and rover status.
Image credits: NASA/JPL-Caltech/LANL
Curiosity Rover Mission Update - Sols 4366–4367: One of Those Days on Mars (Sulfate-Bearing Unit to the West of Upper Gediz Vallis).
Earth planning date: Friday November 15, 2024.
The Monday plan and drive had executed successfully, so the team had high hopes for APXS and MAHLI data on several enticing targets in the rover's workspace. Alas, it was not to be: The challenging terrain had resulted in an awkwardly perched wheel at the end of the drive, so we couldn't risk deploying the arm from this position. Maybe next drive!
We did plan a busy weekend of non-arm science activities regardless. Due to a “soliday” the weekend has two sols instead of three, but we had enough power available to fit in more than three hours of observations. The two LIBS observations in the plan will measure the composition of the flat, reddish material in the workspace that is fractured in a polygonal pattern (“Bloody Canyon”) and a nearby rock coating in which the composition is suspected to change with depth (“Burnt Camp Creek”). One idea is that the reddish material could be the early stage version of the thicker dark coatings we've been seeing.
A large Mastcam mosaic (“Yosemite”) was planned to capture the very interesting view to the rover's north. Nearby and below the rover is the layer of rocks in which the “Mineral King” site was drilled on the opposite side of the channel back in March. This is a stratum of sulfate-bearing rock that appears dark-toned from orbit and we're interested to know how consistent its features are from one side of the channel to the other. Higher up, the Yosemite mosaic also captures some deformation features that may reveal past water activity, and some terrain associated with the Gediz Vallis ridge. So there's a lot of science packed into one mosaic!
Two long-distance RMI mosaics were planned; one is to image back into the channel, where there may be evidence of a late-stage debris flow at the base of the ridge. The second looks “forward” from the rover's perspective instead, into the wind-shaped yardang unit above us that will hopefully be explored close-up in the rover's future. This yardang mosaic is intended to form one part of a stereo observation.
The modern environment on Mars will also be observed with dust devil surveys on both sols, line-of-sight and tau observations to measure atmospheric opacity (often increased by dust in the atmosphere), and zenith and suprahorizon movies with Navcam to look for clouds. There will also be standard passive observations of the rover's environment by REMS and DAN.
We'll continue driving westward and upward, rounding the Texoli butte to keep climbing through the sulfate-bearing unit. It's not always easy driving but there's a lot more science to do!
Written by Lucy Lim, Participating Scientist at NASA’s Goddard Space Flight Center
Source for this blog and the archive of all blogs (with all the links and the original raw images etc) https://science.nasa.gov/blog/sols-4366-4367-one-of-those-days-on-mars-sulfate-bearing-unit-to-the-west-of-upper-gediz-vallis/
These blog updates are provided by self-selected Mars Science Laboratory mission team members who love to share what Curiosity is doing with the public.
Dates of planned rover activities described in these reports are subject to change due to a variety of factors related to the Martian environment, communication relays and rover status.
Image credits: NASA/JPL-Caltech
This image was taken by the MARDI camera onboard NASA's Mars rover Curiosity on Sol 4363 (November 14, 2024) just after 8am local Mars Solar Time.
The Mars Descent Imager (MARDI) acquired hundreds of natural colour images at a rate of 4 frames per second during Curiosity’s descent to the Martian surface on August 6th, 2012.
Still operational on the surface of Mars, MARDI is now used to image under the rover to support science and engineering activities.
Credits: NASA/JPL-Caltech/MSSS
Assembled from 15 overlapping L-MastCam images acquired on November 13, 2024. Bayer reconstruction by fredk
Credits: NASA/JPL-Caltech/MSSSS/fredk
15 overlapping Bayer reconstructed L-MastCam frames.
Credits: NASA/JPL-Caltech/MSSS/fredk
Curiosity Rover - Sols 4359-4361: The Perfect Road Trip Destination For Any Rover! Earth planning date: Friday November 8, 2024.
After the excitement of Wednesday’s plan, it was a relief to come in today to hear that the drive toward our exit from Gediz Vallis completed successfully and that we weren’t perched on any rocks or in any other precarious position. This made for a very smooth planning morning, which is always nice on a Friday after a long week.
But that isn’t to say that Curiosity will be taking it easy for the weekend. Smooth planning means we have lots of time to pack in as much science as we can fit. Today, this meant that the geology group (GEO) got to name eight new targets, and the environmental group (ENV) got to spend some extra time contemplating the atmosphere. Reading through the list of target names from GEO felt a bit like reading a travel guide — top rocks to visit when you’re exiting Gediz Vallis!
If you look to the front of your rover, what we refer to as the “workspace” (and which you can see part of in the image above), you’ll see an array of rocks. Take in the polygonal fractures of “Colosseum Mountain” and be amazed by the structures of “Tyndall Creek” and “Cascade Valley.” Get up close and personal with our contact science targets, “Mahogany Creek,” “Forester Pass,” and “Buttress Tree.” Our workspace has something for everyone, including the laser spectrometers in the family, who will find plenty to explore with “Filly Lake” and “Crater Mountain.” We have old favorites too, like the upper Gediz Vallis Ridge and the Texoli outcrop.
After a busy day sightseeing, why not kick back with ENV and take a deep breath? APXS and ChemCam have you covered, watching the changing atmospheric composition. Look up with Navcam and you may see clouds drifting by, or spend some time looking for dust devils in the distance. Want to check the weather before planning your road trip? Our weather station REMS works around the clock, and Mastcam and Navcam are both keeping an eye on how dusty the crater is.
All good vacations must come to an end, but know that when it’s time to drive away there will be many more thrilling sights to come!
Written by Alex Innanen, Atmospheric Scientist at York University
Source for this blog and the archive of all blogs (with all the links and the original raw images etc) https://science.nasa.gov/blog/sols-4359-4361-the-perfect-road-trip-destination-for-any-rover/
These blog updates are provided by self-selected Mars Science Laboratory mission team members who love to share what Curiosity is doing with the public.
Dates of planned rover activities described in these reports are subject to change due to a variety of factors related to the Martian environment, communication relays and rover status.
Image credits: NASA/JPL-Caltech
Curiosity assembled this focus stacked product using images from its Mars Hand Lens Imager (MAHLI), located on the turret at the end of the rover's robotic arm, on November 11, 2024, Sol 4360. The base images were acquired one sol earlier (4359). The camera focus motor count returned with the first image has been used to estimate the camera standoff distance (camera lens to the target). In this case the standoff was ~25 centimeters (~10 inches). That standoff provides an image scale of ~95 micrometers per image pixel, or a scene width of ~15 centimeters (~6 inches). Image Credits: NASA/JPL-Caltech/MSSS.
Extract from the Blog....
A MAHLI-only target of a crushed rock we drove over named “Milly’s Foot Path.”
Curiosity Rover - Sols 4355-4356: Weekend Success Brings Monday Best. Earth planning date: Monday November 4, 2024.
After a spooky week last week, it’s great to see all our weekend plans succeed as planned! We don’t take success for granted as a rover going on 13 years. With all of the science at our fingertips and all the battery power we could need, the team took right advantage of this two-sol touch-and-go Monday plan. We have a bedrock DRT target for APXS and MAHLI named “Epidote Peak” and a MAHLI-only target of a crushed rock we drove over named “Milly’s Foot Path.”
APXS data is better when it’s cold, so we’ve planned the DRT brushing and APXS to start our first sol about 11:14 local Gale time. MAHLI images are usually better in the afternoon lighting, so we’ll leave the arm unstowed and spend some remote science time beforehand, about 12:15 local time. ChemCam starts that off with a LIBS raster over a bedrock block with some interesting light and dark layering, named “Albanita Meadows” and seen here in the the upper-right-ish of this Navcam workspace frame. ChemCam will then take a long-distance RMI mosaic of a portion of the upper Gediz Vallis ridge to the north. Mastcam continues the remote science with an Albanita Meadows documentation image, a 21-frame stereo mosaic of some dark-toned upturned blocks about 5 meters away (about 16 feet), a four-frame stereo mosaic of some polygonal fracture patterns about 20 meters away (about 66 feet), and a mega 44-frame stereo mosaic of Wilkerson butte, upper Gediz Vallis ridge, “Fascination Turret,” and “Pinnacle Ridge” in the distance. That’s a total of 138 Mastcam images! With remote sensing complete, the RSM will stow itself about 14:00 local time to make time for MAHLI imaging.
Between about 14:15 and 14:30 local time, MAHLI will take approximately 64 images of Epidote Peak and Milly’s Foot Path. Most of the images are being acquired in full shadow, so there is uniform lighting and saturation in the images. We’ll stow the arm at about 14:50 and begin our drive! This time we have an approximately 34-meter drive to the northwest (about 112 feet), bringing us almost all the way to the next dark-toned band in the sulfate unit. But no matter what happens with the drive, we’ll still do some remote science on the second sol including a Mastcam tau observation, a ChemCam LIBS in-the-blind (a.k.a AEGIS: Autonomous Exploration for Gathering Increased Science), and some Navcam movies of the sky and terrain.
Written by Natalie Moore, Mission Operations Specialist at Malin Space Science Systems
Source for this blog and the archive of all blogs (with all the links and the original raw images etc) https://science.nasa.gov/blog/sols-4355-4356-weekend-success-brings-monday-best/
These blog updates are provided by self-selected Mars Science Laboratory mission team members who love to share what Curiosity is doing with the public.
Dates of planned rover activities described in these reports are subject to change due to a variety of factors related to the Martian environment, communication relays and rover status.
Image credits: NASA/JPL-Caltech/MSSS
Curiosity Rover - Sols 4350-4351: A Whole Team Effort. Earth planning date: Wednesday October 30, 2024
Just like you and me, the Curiosity rover has a few idiosyncratic tendencies — special ways that the rover behaves that we, the team on Earth, have come to understand to be harmless but still throw a curveball to our planning.
Unfortunately, the set of activities that were planned to execute on Monday behaved in one of these special ways — leaving the rover’s arm down on the ground without completing the planned set of activities, including the remainder of our contact science, remote sensing, or drive.
When this happens the whole team gets together to review the information Curiosity sends to us, and we ensure as a team that we understand the quirky way the rover acted and that we are good to proceed. While not ideal for keeping up with our scientific cadence, I appreciate these moments because they remind me of all the experts we have evaluating the rover’s health and safety day in and day out.
So for today’s plan — we completed the contact science observations of “Reds Meadow” that had been planned on Monday and picked up a second suite of contact science measurements of “Ladder Lake.” Both of these are bedrock targets and the APXS and MAHLI observations we make will continue our characterization of changes in bedrock composition and morphology in this area. We also repeated the remote sensing observations planned on Monday that did not execute.
With a fresh set of Rover Planner eyes, we reassessed if the drive planned on Monday was still the best we could do and, impressively, today’s RP agreed. So the drive remains the same, making excellent progress toward our next imaging waypoint.
The remainder of the plan contained our usual atmospheric measurements!
We’ll see what Friday holds!
Written by Elena Amador-French, Science Operations Coordinator at NASA's Jet Propulsion Laboratory
Source for this blog and the archive of all blogs (with all the links and the original raw images etc) https://science.nasa.gov/blog/sols-4350-4351-a-whole-team-effort/
These blog updates are provided by self-selected Mars Science Laboratory mission team members who love to share what Curiosity is doing with the public.
Dates of planned rover activities described in these reports are subject to change due to a variety of factors related to the Martian environment, communication relays and rover status.
Image credits: NASA/JPL-Caltech
Curiosity Rover - Sols 4348-4349: Smoke on the Water.
Earth planning date: Monday October 28, 2024
Before the science team starts planning, we first look at the latest Navcam image downlinked from Curiosity to see where the rover is located. It can be all too easy to get lost in the scenery of the Navcam and find new places in the distance we want to drive towards, but there’s so much beauty in the smaller things. Today I’ve chosen to show a photo from Curiosity’s hand lens camera, MAHLI, that takes photos so close that we can see the individual grains of the rock.
The planning day usually starts by thinking about these smaller features: What rocks are the closest to the rover? What can we shoot with our laser? What instruments can we use to document these features? Today we planned two sols, and the focus of the close-up contact science became a coating of material that in some image stretches looks like a deep-purple color.
We planned lots of activities to characterize this coating including use of the dust removal tool (DRT) and the APXS instrument on a target called “Reds Meadow.” This target will also be photographed by the MAHLI instrument. The team planned a ChemCam LIBS target on “Midge Lake” as well as a passive ChemCam target on “Primrose Lake” to document this coating with a full suite of instruments. Mastcam will then document the ChemCam LIBS target Midge Lake, and take a mosaic of the vertical faces of a few rocks near to the rover called “Peep Sight Peak” to observe the sedimentary structures here. Mastcam will also take a mosaic of “Pinnacle Ridge,” an area seen previously by the rover, from a different angle. ChemCam is rounding off the first sol with two long-distance RMI mosaics to document the stratigraphy of two structures we are currently driving between: Texoli butte and the Gediz Vallis channel.
In the second sol of the plan, after driving about 20 meters (about 66 feet), Curiosity will be undertaking some environmental monitoring activities before an AEGIS activity that automatically selects a LIBS target in our new workspace prior to our planning on Wednesday morning.
Written by Emma Harris, Graduate Student at Natural History Museum, London
Source for this blog and the archive of all blogs (with all the links and the original raw images etc) https://science.nasa.gov/blog/sols-4348-4349-smoke-on-the-water/
These blog updates are provided by self-selected Mars Science Laboratory mission team members who love to share what Curiosity is doing with the public.
Dates of planned rover activities described in these reports are subject to change due to a variety of factors related to the Martian environment, communication relays and rover status.
Image credits: NASA/JPL-Caltech/MSSS
Curiosity's workspace after a drive of 24.9 meters / 81.8 feet on sol 4346. This mosaic is assembled from 15 overlapping Bayer reconstructed left mast camera subframe images (L-MastCam). Image credits: NASA/JPL-Caltech/MSSS/fredk
Late Slide, Late Changes - Curiosity Rover Blog for Sols 4343-4344. Earth planning date: Wednesday October 23, 2024
Curiosity is driving along the western edge of the Gediz Vallis channel, heading for a good vantage point before turning westward and leaving the channel behind to explore the canyons beyond. The contact science for “Chuck Pass” on sol 4341 and backwards 30-meter drive (about 98 feet) on sol 4342 completed successfully.
This morning, planning started two hours later than usual. At the end of each rover plan is a baton pass involving Curiosity finishing its activities from the previous plan, transmitting its acquired data to a Mars-orbiting relay satellite passing over Gale Crater, and having that satellite send this data to the Deep Space Network on Earth. This dataset is crucial to our team’s decisions on Curiosity’s next activities. It is not always feasible for us to get our critical data transmitted before the preferred planning shift start time of 8 a.m. This leads to what we call a “late slide,” when our planning days start and end later than usual.
Today’s shift began as the “decisional downlink” arrived just before 10 a.m. PDT. The science planning team jumped into action as the data rolled in, completed plans for two sols of science activities, then had to quickly change those plans completely as the Rover Planners perusing new images from the decisional downlink determined that the position of Curiosity’s wheels after the drive would not support deployment of its arm, eliminating the planned use of APXS, MAHLI, and the DRT on interesting rocks in the workspace. However, the science team was able to pivot quickly and create an ambitious two-sol science plan for Curiosity with the other science instruments.
On sols 4343-4344, Curiosity will focus on examining blocks of finely layered or “laminated” bedrocks in its workspace. The “Backbone Creek” target, which has an erosion resistant vertical fin of dark material, will be zapped by the ChemCam laser to determine composition, and photographed by Mastcam. “Backbone Creek” is named for a stream in the western foothills of the Sierra Nevada of California flowing through a Natural Research Area established to protect the endangered Carpenteria californica woodland shrub. Curiosity is currently in the “Bishop” quadrangle on our map, so all targets in this area of Mount Sharp are named after places in the Sierra Nevada and Owens Valley of California. A neighboring target rock, “Fantail Lake,” which has horizontal fins among its layers, will also be imaged at high resolution by Mastcam. This target name honors a large alpine lake at nearly 10,000 feet just beyond the eastern boundary of Yosemite National Park. A fractured rock dubbed “Quarter Dome,” after a pair of Yosemite National Park’s spectacular granitic domes along the incomparable wall of Tenaya Canyon between Half Dome and Cloud’s Rest, will be the subject of mosaic images for both Mastcam and ChemCam RMI to obtain exquisite detail on delicate layers across its broken surface (see image). The ChemCam RMI telescopic camera will look at light toned rocks on the upper Gediz Vallis ridge. Curiosity will also do a Navcam dust devil movie and mosaic of dust on the rover deck, then determine dust opacity in the atmosphere using Mastcam.
Following this science block, Curiosity will drive about 18 meters (about 59 feet) and perform post-drive imaging, including a MARDI image of the ground under the rover. On sol 4344, the rover will do Navcam large dust devil and deck surveys. It will then use both Navcam and ChemCam for an AEGIS observation of the new location. Presuming that Curiosity ends the drive on more solid footing than today’s location, it will do contact science during the weekend plan, then drive on towards the next fascinating waypoint on our journey towards the western canyons of Mount Sharp.
Written by Deborah Padgett, OPGS Task Lead at NASA's Jet Propulsion Laboratory
Source for this blog and the archive of all blogs (with all the links and the original raw images etc) https://science.nasa.gov/blog/sols-4343-4344-late-slide-late-changes/
These blog updates are provided by self-selected Mars Science Laboratory mission team members who love to share what Curiosity is doing with the public.
Dates of planned rover activities described in these reports are subject to change due to a variety of factors related to the Martian environment, communication relays and rover status.
Image credits: NASA/JPL-Caltech
Decisions, Decisions - Curiosity Rover Blog for Sols 4338-4340. Earth planning date: Friday October 18, 2024
On sol 4338, we have a science block planned as well as some arm activities. Our science activities include a ChemCam observation of “Donkey Lake.” This is a bedrock target with exposed laminations. In geology, lamination is a sequence of small-scale, embedded fine layers of sedimentary rock. Next, we will do an RMI mosaic as well as Mastcam imaging on “Fascination Turret" to document the boulder configuration for study of both debris flow and rock deposition processes. We’ll also do a Navcam dust devil survey to study the Martian atmosphere, before moving into our arm backbones. We’ll perform a DRT and APXS on several bedrock targets with exposed layering. An exciting sol for geology!
Sol 4339 presented some interesting decisions for our planning team to make. We started out with a science block. This included a ChemCam LIBS analysis on a soil target with interesting color differences. We also performed an RMI mosaic and Mastcam imaging of “Whitebark Pass” to study possible surface erosion. After this science block, we planned to do a long traverse, which is where planning got a bit tricky.
The drive was a bit complicated to plan. The terrain had lots of rocks which ultimately prevented us from planning a guarded drive (i.e., a drive using auto navigation), which would have extended the drive length. There are occlusion considerations — we always want to end the drive in a good orientation for a communications link. When evaluating our end of drive, there are potential configurations where the line of sight for communications would be blocked, either due to terrain or due to objects on the rover deck. Here, because of the many and large size of rocks in our terrain, we were not confident that auto-navigation would not fault and position us in a bad orientation for our next communications window. With this risk, we decided to take a shorter drive with a sure unoccluded end-of-drive orientation. As planned, our drive will reach about 27 meters (almost 89 feet), whereas a guarded drive if the terrain was better might have yielded around 50 meters (about 164 feet). After the drive, we’ll take some imaging and do a Mastcam survey to observe soils along the traverse path.
On sol 4340, we planned for two science blocks. The first included a ChemCam AEGIS activity — this will allow the rover to examine its surroundings and pick out some interesting targets for analysis. We will also perform a Navcam dust devil movie to capture any interesting dust activities in the atmosphere. Next, we’ll move into our second science block, which is focused on environmental science. We’ll first take Mastcam tau observations, which will allow us to study and measure the optical depth of the atmosphere, which is often used as a proxy to understand the dust in the atmosphere. We’ll also do some early morning remote science, including Navcam cloud movies at zenith and at suprahorizon.
Written by Remington Free, Operations Systems Engineer at NASA's Jet Propulsion Laboratory
Source for this blog and the archive of all blogs (with all the links and the original raw images etc) https://science.nasa.gov/blog/sols-4338-4340-decisions-decisions/
These blog updates are provided by self-selected Mars Science Laboratory mission team members who love to share what Curiosity is doing with the public.
Dates of planned rover activities described in these reports are subject to change due to a variety of factors related to the Martian environment, communication relays and rover status.
Image credits: NASA/JPL-Caltech/MSSS/fredk
A lemmy community for scientific discussion of the Curiosity Rover and Mars Science Laboratory.
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