March 28, 2014
Our closest cosmic neighbor is also a great cosmic mystery. It has power over us, exerting mysterious influences that have profoundly impacted our history and impacts the lives of every one of us every day. But what is the moon? Is the scientific theory that the moon is the result of a huge impact with Earth by a Mars-sized object billions of years ago correct? If not, then where did it come from?
via unknowncountry http://ift.tt/11SbyTl
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