What You Were Taught About How the Moon Formed May be Completely Wrong

For years planetary scientists have chalked up the moon’s origin to an impact between Earth and a Mars- or larger-sized body called Theia. According to this theory about 4.5 billion years ago a newly-coalesced Earth was hit by another protoplanet. The impact pulverized a sizable part of our young planet, sending the debris into orbit where, under its own gravity, … Continue reading →