There is a supermassive black hole at the center of nearly every big galaxy—including ours, the Milky Way (it’s called ...

Blazars are active galaxies that emit narrow jets of ionized matter from their centers, aimed towards Earth. Depending on ...

BL Lacertae blazar shifts between classifications faster than expected. It shows record X-ray activity and challenges current ...

Is there anything more that this data can tell us?'" Bajaj, an astronomer at the University of Arizona, told Space.com. Soon, ...

Consigned by John Costello's Fenloe House, the son of Tom Costello whose academy graduates include Best Mate, the horse ...

Exploding stars known as supernovas may have sparked mass extinctions that wiped out up to 85% of animals on Earth.