Earth's Moon: Formation, Composition and Orbit
![Astronaut Paolo Nespoli took this image of the moon on March 20, 2011, and wrote, "#Supermoon was spectacular from here!"](https://cdn.mos.cms.futurecdn.net/LeZ2ZicMsBz2MDs3JA2kJn-320-80.jpg)
Scientists say a giant impact knocked off the raw ingredients for the moon off the primitive molten Earth and into orbit.
Related Topics: Earth, Apollo Program, Moon Phases
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