By: Josh King, Buzz60
An old theory about how Earth's moon was formed is getting a second look.
Israeli scientists believe that multiple collisions to an early Earth occurred, making a bunch of mini moons which eventually merged together.
This theory contradicts the more widely held belief that one large impact knocked a chunk of Earth into space creating our moon.
Scientists at the Weizmann Institute of Science in Israel say their ..."model suggests that the ancient Earth once hosted a series of moons, each one formed from a different collision with the proto-Earth."
But even they agree that the concept of these moons merging by crossing orbits and colliding still requires more work.
Gareth Collin's, a scientists at London's Imperial College says that not all of these mini-moons would have merged successfully, requiring a larger number of impacts to have occurred than previously thought.
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