This was inspired by a hypothesis that #PhobosMoon's grooves are the result of rolling boulders originating from the #StickneyCrater impact.

Here's the press release and reference to the science paper
https://www.brown.edu/news/2018-11-20/phobos

and one of the simulation videos
https://yewtu.be/watch?v=XhbOGYuvxdU&t=230

#MarsScience

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More #PhobosMoon #TBT, mine from #PlanetArtober 2020:

"Boulder Avalanche at Phobos"

Fingerpainted on tablet with #SketchbookApp

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#TBT, photo of #PhobosMoon taken by #ESA #MarsExpress on 2007. Warts and all (blur, noise, Mars-shine or artifact?), it's one of my favourites.

Browse version in the archive:
https://archives.esac.esa.int/psa/ftp/MARS-EXPRESS/HRSC/MEX-M-HRSC-3-RDR-V3.0/BROWSE/4698/H4698_0006_SR2.JPG

The whole data set has a few more angles of the same encounter:

https://archives.esac.esa.int/psa/ftp/MARS-EXPRESS/HRSC/MEX-M-HRSC-3-RDR-V3.0/DATA/4698/