RT @Braun23Austin: Simulation of early Earth getting hit by a Mars-sized planet – The most accepted theory to where the moon came from! vine.co/v/izHpb7ZKhMi
RT @Braun23Austin: Simulation of early Earth getting hit by a Mars-sized planet – The most accepted theory to where the moon came from! vine.co/v/izHpb7ZKhMi