Sean Raymond

A new way of thinking about the history of the Earth.

The story of the doom-bringing rock may help us prevent a repeat catastrophe.

Post-apocalyptic star systems could reveal the fate of our own.

A new theory shows Earth’s water was more locally sourced than ever thought before.

The series of fortunate astrophysical events that gave us Ceres.

First the oceans boil off. Then things really get serious.

Why Earth wasn’t swept into the dustbin of space.

How advanced civilizations could leave us a message of their presence.

New research hints at what makes Earth’s moon special.

Could a comet, not an asteroid, have killed the dinosaurs?