Using an amateur radio setup, 10 children chatted with astronaut Donald Pettit about life on the International Space Station.

Boeing's Starliner astronauts are in the final stretch of their unexpectedly long stint in Earth orbit — and they're setting ...

The neutrino was 30 times more energetic than any other previously observed particle of its kind. Scientists still don’t know ...

A new study shows black holes can form without singularities, using only modifications to Einstein’s equations.

It’s not every day that high-profile figures put their differences aside — but that’s exactly what just happened. During an ...