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Dark matter may occasionally interact with minerals in the earth, leaving telltale tracks that physicists hope to decipher.
Planetary geologist Meenakshi Wadhwa uses Martian meteorites to trace the history of our solar system.
Simple physical principles can be used to describe how rivers grow everywhere from Florida to Mars.
Evidence for life in 3.7-billion-year-old rocks appears to be crumbling away.
A series of fossil finds suggests that life on Earth started earlier than anyone thought, calling into question a widely held theory of the solar system’s beginnings.
Jason Morgan developed the theory of plate tectonics in 1967 while working among a critical mass of talented geophysicists at Princeton University.
Geochemical signals from deep inside Earth are beginning to shed light on the planet’s first 50 million years, a formative period long viewed as inaccessible to science.
By blasting a stack of minerals with a four-meter-long gun, scientists have found a new clue about the backstory of a very strange rock.
Did the minerals on our planet arise in a predictable fashion, or did they result from chance events? The answers could eventually help scientists identify planets likely to harbor life.