The Martian moon Deimos is being closely examined by the "Hope" space probe. It turns out that it was apparently created differently than previously assumed.
It is possible that the small moon broke away from the red planet at some point in the past. This is how the moon that orbits the earth was formed more than four billion years ago. It seems that a new theory must now be developed as to how DeIMos became a moon of the planet Mars.. Mars has two moons: Phobos and DeimOS.