Throughout the span of about a month to a year, Many of these chunks came together, attracted to one another’s gravity, and fashioned the Moon. Amongst only two Martian moons, Phobos is described as not more than a very small rock. NASA also notes that Phobos is with a collision https://andyjnnmm.laowaiblog.com/33654600/the-2-minute-rule-for-bestmoons