Interesting. Earth's moon may once have been from Venus

[Channel Hopper]

....Venus possibly would have gotten its moon after an even earlier giant impact of some sort, and the planet may have lost its moon either by collision or by escape. This would mean an object passed close by the Venus system and caused the moon to depart from its orbit,....


http://www.space.com/22966-earths-moon-from-venus.html

 

[excollier]