RIP Theia, you crashed with Earth to create the Moon (maybe)
February 6, 2016 11:01 AM Subscribe
The giant impact hypothesis is the most widely supported theory for how the moon was formed, with research in 2014 adding support to this theory over other possibilities. Now UCLA-led research reconstructs a massive crash that took place 4.5 billion years ago (abstract, full article paywalled), supporting the theory that the Moon was produced by a head-on collision between Earth and Theia, a forming planet.
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