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
Deep earthquakes could reveal secrets of the Earth’s mantle
Study uses 350-mile-deep earthquake to make elusive measurements of the Earth’s layers
New study helps pinpoint when Earth’s tectonic plates began
Rocks tell story of planet’s transition from alien landscape to continents, oceans and life