Ripples in the fabric of space-time called gravitational waves may be the key to solving the Hubble tension — one of the biggest nagging problems in physics.

Astronomers have used the LOFAR telescope array to create the largest radio survey of the cosmos, revealing 13.7 million ...

A subtle gravitational-wave “hum” from merging black holes may help settle the cosmic fight over how fast the universe is ...

Black holes, regions of spacetime in which gravity is so strong that nothing can escape, are intriguing and extensively studied cosmological phenomena. Einstein's general theory of relativity predicts ...

Black holes that turn matter into energy could explain dark energy and answer two other cosmic questions. Now, the challenge ...

For years, cosmologists have argued over a simple question with an awkward answer: How fast is the universe expanding right ...

Scientists pursuing supermassive black holes suspect that these giants merge somewhere in the universe roughly once a year, but they don’t know how to find them. They think the evidence is hidden in ...

Back in 1971, the late physicist Stephen Hawking made an intriguing prediction: The total surface area of a black hole cannot decrease, only increase or remain stable. So if two black holes combine, ...

"Rohan was first, for Rohan Shivakumar, the Yale student who first analyzed it, and Gondor was next, because, well — the beacons were lit!" When you purchase through links on our site, we may earn an ...