The Big Bang made matter and antimatter in equal measure, so where did all the antimatter go? This cosmic imbalance may hold ...

Unlike active galaxies that constantly pull in surrounding material, these black holes lie dormant until a star passes by.

Astronomers at MIT, Columbia University, and elsewhere have used NASA's James Webb Space Telescope (JWST) to peer through the ...

Less than a decade since the first detection of gravitational waves—ripples in spacetime itself—proposed budget cuts threaten ...