These black holes are the most distant and stable objects we know. Using a technique called very long baseline interferometry ...

A distant cluster of galaxies is wrapped in a vast halo of high-energy particles that could be the work of supermassive black ...

Astronomers in Australia picked up a strange radio signal in June 2024 — one near our planet and so powerful that, for a ...

"This work is a step toward understanding how quantum mechanics and gravity work together, a major unsolved problem in ...

Predicted by Einstein and dismissed as undetectable, gravitational waves were finally heard in 2016. Now, with observatories ...