The weird linear grooves scoring the surface of the Mars moon Phobos were carved by boulders knocked loose by a giant impact, a new study suggests.
https://www.space.com/42504-mars-moon-phobos-grooves-boulders.html
The weird linear grooves scoring the surface of the Mars moon Phobos were carved by boulders knocked loose by a giant impact, a new study suggests.
https://www.space.com/42504-mars-moon-phobos-grooves-boulders.html