The giant impact hypothesis
November 21, 2015 640 × 431 If Earth's life time was the distance from Los Angeles to New York City
How was the Moon evolved? "The giant impact hypothesis" is the prevailing theory supported by the scientific community. Like the other planets, the Earth formed from the leftover cloud of dust and gas orbiting the young sun. The early solar system was a violent place, and a number of bodies were created that never made it to full planetary status. According to the giant impact hypothesis, one of these crashed into Earth not long after the young planet was created. Photo: space.com