One aspect of those meter-sized boulders is how rounded they are. They have been part of the bedload of this waterway through many catastrophic flows. And note the diverse rock types present. There was a lot happening upstream of the delta.

--Bill

A little late ... ( and somewhat back in action )
Sol 404 - Chute and Backshell -- DeepHisto
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https://mars.nasa.gov/resources/27056/perse...e-views-phobos/

Perseverance images Phobos.

Taking that image and blowing it up considerably:

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It looks awful, but I would hope the raw data will look better when available. If you brighten the dark area the part of Phobos illuminated by Mars becomes visible. A dark streak in that area is shadow (Mars shadow) in Stickney crater. I cleaned up a lot of fluff in the image off the disk.

Phil

There is still one thing I don't fully understand, how is the drilled core placed into the sample tubes ?
Is the tube inside the drill or is the sample core pushed into the tube ?
Thanks.

The tube is inside the drill, but the whole process is fairly involved. See Figure 6 of "Mars 2020 Rover Adaptive Caching Assembly: Caching Martian Samples for
Potential Earth Return", Silverman and Lin, https://esmats.eu/amspapers/pastpapers/pdfs...0/silverman.pdf

I think this image is from sol 319 so the raw image is available already -- https://pds-imaging.jpl.nasa.gov/data/mars2...2_1100LMJ02.IMG if I'm not mistaken.

It looks somewhat better if you get rid of the hot pixels and process appropriately, but Phobos is only 45-ish pixels across so there are limits to how good it can be (I blew this up 2x and just crudely painted out the hot pixels, so don't stretch too hard.)

Revisiting Sol 389 with large version link.

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Sol 388 (below) with large version link.

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Sol 387 with large version link.

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Extended drive animation from Sol 387 to the present.