ghost77 Messages 2 Reaction score 0 Thread starter Sep 2, 2006 #1 Being new to astronomy, I was wondering, do all planets have moons? What are they? how did they get there?
Being new to astronomy, I was wondering, do all planets have moons? What are they? how did they get there?
russ_watters Mentor Insights Author Messages 23,899 Reaction score 11,354 Sep 3, 2006 #2 No, not all planets have moons - Mercury and Venus don't. Moons are generally either captured asteroids, blasted off pieces of the planet they orbit (our moon, probably), or just formed from the same disk of dust that formed the planet they orbit.
No, not all planets have moons - Mercury and Venus don't. Moons are generally either captured asteroids, blasted off pieces of the planet they orbit (our moon, probably), or just formed from the same disk of dust that formed the planet they orbit.