A Cataclysmic Collision Formed the Moon, but Killed Theia

The Moon is the first object in space that fascinates we Earthlings. The Sun might be more prominent, but you can't stare at the Sun without ocular damage. Anyone can gaze at the Moon, with or without binoculars or a telescope, and wonder where it came from and what it all means. New evidence from a team at UCLA is clarifying the story of the Moon's origins. According to this research, the Moon was formed as a result of a massive collision between Earth and a "planet embryo" about the size of Ma...