Lunar rocks help scientists pinpoint when the moon crystallized
UChicago scientists study samples from Apollo missions, reveal new details about lunar history
Crystals from Apollo mission find moon is 40 million years older than scientists thought
New UChicago, Field Museum study finds lunar crystals formed at least 4.46 billion years ago
How the Earth and moon formed, explained
How old is the Earth and how did we get our moon? Learn what we know and how we know it—and what mysteries still remain.