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Planetary Science

An ancient impact on Earth led to a cascade of cratering

For the first time, scientists have discovered clusters of craters on Earth that were formed by the impacts of material thrown out of a larger crater.

Astronomy

A rare collision of dead stars can bring a new one to life

These carbon- and oxygen-covered stars may have formed from an unusual merging of two white dwarfs.

Paleontology

Fossils show a crocodile ancestor dined on a young dinosaur

The 100-million-year-old fossil of a crocodile ancestor contains the first indisputable evidence that dinosaurs were on the menu.