What Made the Moon? New Ideas Try to Rescue a Troubled Theory

Published: Nov. 17, 2017, 5 p.m.

Textbooks say that the moon was formed after a Mars-size mass smashed the young Earth. But new evidence has cast doubt on that story, leaving researchers to dream up new ways to get a giant rock into orbit.

The post What Made the Moon? New Ideas Try to Rescue a Troubled Theory first appeared on Quanta Magazine