No good. The Earth-Moon system is unique in it's mass range in the percentage of the system that is the moon. No other planet's satellite masses even come close, except for Pluto/Charon which is a whole different beast.<br /><br />Edit:::The earth impactor (if the theory is correct) was not an asteroid, but a dwarf planet. So saying it was a mere asteroid is not true.<br /><br />Mercury, 0 Moons<br />Venus, 0 Moons<br />Mars, 0 moons (two little rubble bits in a short period orbit)<br /><br />Jupiter, whole bunch of moons that are a tiny percentage of the mass of the parent planet.<br />Saturn, Uranus, Neptune the same.<br /><br />So the inner rocky, small planets have no moons except for the earth.<br /><br />The outer gas giants have a whole lot that don't amount to a hill of beans, as would be expected considering their Hill radius.<br /><br />Pluto/Charon/Nix/Hydra is actually a confirmation that an impact can create a satellite system.<br /><br />God may have rolled the dice, but after that, it's physics. Please don't get this thread moved to P..... <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>