Moon may be younger than thought, study says
Wednesday, August 17, 2011 - 18:30
in Astronomy & Space
An analysis of a lunar rock raises questions about when and how the moon was formed. It may be 200 million years younger than widely believed.The moon may be 200 million years younger than widely believed, according to a new analysis of a rock brought back to Earth in 1972 by Apollo 16 astronauts. Or, if not, the moon may never have had the magma ocean that scientists think covered its surface soon after it formed.