A Lumpy Moon

8 Sep 2021

William also sent in this link - www.yahoo.com/lifestyle/perseverance-captures-incredible-clip-lumpy-2013... ... Perseverance on the surface of the planet Mars, has beamed back some nice images - including one of the Mars moons.

At https://phys.org/news/2021-08-doctoral-student-volunteers-effort-quadrup... ... recruiting volunteers to look for active asteroids

At https://phys.org/news/2021-08-accidental-discovery-hints-hidden-populati... ... a hidden population of brown dwarfs

At https://phys.org/news/2021-08-geologists-theory-famous-asteroid.html ... the famous asteroid is Vesta, visited by the Dawn Mission a few years ago. The asteroid is composed of rock and we are told it has an iron core as well, which mainstream suspect it was a planet in the making that was aborted. Vesta has two prominent impact craters. It also has two large troughs - the main feature of interest. What triggered the formation of the troughs?

See also https://doi.org/10.1016/j.icarus.2021.114512