In 1987, an enormous blue arc, thought to be hundreds of trillions of miles long, was first considered one of the largest ...

A distant galaxy, invisible for billions of years, has reappeared in a surprising form thanks to a rare cosmic illusion ...

Explore wormholes: theoretical cosmic shortcuts through spacetime. Learn if they're real, what they might look like, and ...

Discover interesting facts about what black holes are, how they form and what would happen if you fell into one.

What lies at the heart of a black hole has puzzled physicists for decades. Now, a team led by physicist Enrico Rinaldi has ...

The U2 frontman spent the past few years reexamining his life and career. Now he’s back with new projects, new music—and a ...

The dissonance observed in black hole ringdown signals has now been resolved, offering new insights into black hole behavior and further supporting the predictions of General Relativity.

The voluble billionaire discusses his mission to transform health care, why Kamala lost, the problem with Bluesky, and much ...

On May 29, 1919, a total solar eclipse helped to prove Albert Einstein's theory of general relativity. Einstein's theory ...

A new physics paper takes a step toward creating a long-sought "theory of everything" by uniting gravity with the quantum world. However, the new theory remains far from being proven observationally.