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

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

In a groundbreaking discovery, scientists have detected a massive ringing emitted by colliding black holes, providing the most compelling evidence to date that Albert Einstein, Stephen Hawking, and ...

In my January 23, 2026, “The Universe” column, I wrote about some of the biggest bangs the universe has to offer: exploding stars, hiccupping magnetars, stellar disruptions and colliding black holes.

Black holes are incredible objects that are so massive that they can pull everything, including light, into them. Even for huge things like this, however, there are levels, and a black hole can be ...

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

A remarkably clean gravitational-wave detection has confirmed long-standing predictions about black holes, including Hawking’s area theorem and Einstein’s ringdown behavior. The findings also provide ...

Looking ahead: Future Euclid observations will enable scientists to watch how galaxy collisions spark bursts of star formation, fuel shrouded black holes, and unleash energetic feedback. According to ...

Scientists have discovered two supermassive black holes, locked together in a final, terrible spiral. They're about to collide. And when they do, it will shake the fabric of spacetime itself. Combing ...

A fluffy cluster of stars spilling across the sky may have a secret hidden in its heart: a swarm of over 100 stellar-mass ...