Reionization is thought to have been driven by ultraviolet light produced by both early stars and active galactic nuclei ...

When galaxies collide, it's not a gentle affair, but it does take millions of years. Over this time, the two massive star ...

The story begins with the black hole information paradox. According to relativity, anything that falls into a black hole is ...

Cardiologist: 9 American foods you 'couldn't pay me to eat'—after 20 years of treating heart attacks Jim Caviezel Won't ...

Astronomers have achieved the first radio image of a supermassive black hole pair, using the retired Russian RadioAstron ...

When two black holes meet, they are drawn to one another by way of their enormous gravity, initiating a powerful orbital ...

After decades of searching, astronomers have imaged two supermassive black holes in orbit around each other at the heart of ...

On a windy August afternoon in 2017, Akitsinnguaq Ina Olsen was relaxing in the old harbour of Nuuk, Greenland's capital, when a Chinese icebreaker sailed unannounced into the Arctic island's ...