History Channel's The Universe really likes to repeatedly reuse old animations. Sometimes using the same animation several times in the same episode. Discovery has a relatively new series called How the Universe Works that uses some really good animations and sounds.
The guy that commented above you wants me to collide the moon and planet so that may be my next animation. Then Yindako when I finish its new map.
Why wouldn't it loop? Because of the clouds, or you mean the whole impact thing? In other news, Russia just got hit by one space rock, the day one about 50 meters big was going to pass by below satellites. (Not the same one, if it was, Russia would be in chaos, as that one was big enough to reach surface), in case you haven't heard.
Show your face? But your profile has your picture!