[LarryLee Booth (OP)]

I think the moon forming impactor was a ice dwarf planet this could explain why there is so much water on earth . Also i don't think that without the ice hitting the partly molten earth that there would be enough force to blast enough matter fare enough out to form a large moon like we have . could also explain how the processes fore life were started if the ice planet had a liquid  ocean under the ice there would be a lot of water flooding out over a lot of magma . could also explain why we have oceans and seas . If you think about how much pressure fore that much mass there would be a lot of heat from that pressure near the core . I think most ice planets should have these oceans .   

[LarryLee Booth (OP)]

It could explain a lot more also