Was Our Moon’s Formation Likely or Lucky?

Was Our Moon’s Formation Likely or Lucky?

4.5 billion years ago, a Mars-sized body was believed to have impacted a young Earth, and this planetesimal’s obliterated remains coalesced into what is now our Moon. However, certain striking similarities between the Earth and Moon question the likelihood of this event. Two recent papers investigated the giant impact scenario, only to come to opposite conclusions. Read on to hear more about this lunar enigma.