Protecting Earth from asteroids is part of the job we hired the Moon to do. I mean, have you seen the back side of that thing? Kidding aside, an argument can b

Protecting Earth from asteroids is part of the job we hired the Moon to do. I mean, have you seen the back side of that thing? Kidding aside, an argument can be made that life on Earth would never have had time to evolve if not for the Moon's protective effect against cataclysmic impacts.