The early universe was already warm before reionization, revealing that the first stars did not flicker on in an icy cosmos.

A new peer-reviewed study finds that early planet formations were assembled from fragments of earlier bodies within the Solar System.

Cratons are thick and relatively cold, making them very durable during earth’s history. Continents, and their craton cores, ...

Watch the Earth's tectonic plates grow, shrink, and jostle for position in this new model of the last billion years on the ...