A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Credit: E. Cottrell, Smithsonian. If you’re ...

The entire history of human existence is a tiny blip in our solar system’s 4.5-billion-year history. No one was around to see planets forming and undergoing dramatic changes before settling in their ...

Bits of rock from the farside of the moon are adding weight to a scientific rethink about the solar system’s adolescence. The moon’s craters and basins attest to its history of being battered by ...

How often do mountains collapse, volcanoes erupt or ice sheets melt? For Earth scientists, these are important questions as we try to improve projections to prepare communities for hazardous events in ...