This unprecedented view of the Bullet Cluster provided by the James Webb Space Telescope and the Chandra X-ray Observatory ...

Is it possible to understand the Universe without understanding the largest structures that reside in it? In principle, not ...

I’ve spent much of my long life studying — and trying to understand — the history of the universe. Along the way, I have been constantly reminded that science is essentially international: Science ...

New observations show a star that blew up in two separate bursts, confirming a long-suspected cosmic phenomenon called a ...