On human timescales, the universe may as well be eternal. It’ll be here long after our species and our planet are gone, but ...

New observations from the James Webb Space Telescope hint that the universe’s first stars might not have been ordinary fusion ...

The story begins with the black hole information paradox. According to relativity, anything that falls into a black hole is ...

Pulsars suggest that ultra–low-frequency gravitational waves are rippling through the cosmos. The signal seen by ...

Cosmologists can now explore data faster than ever before with a new emulator. As astronomers continue to uncover the mysteries of the universe, their work generates increasingly vast and intricate ...

A new study from David Kipping attempts to explain why we are located around a yellow star, and so early in the universe.

Astronomers have detected one of the darkest objects ever seen at a record cosmic distance—only with the assistance of ...

A new model suggests the universe may stop expanding and collapse in a reverse Big Bang, ending in a Big Crunch about 20 ...

The institution operates some of the most popular sites in Washington and beyond, including 21 museums and the National Zoo.

The introduction of Darkseid in Superman's Pal Jimmy Olsen #134 gave readers one of the greatest comic villains ever.

A new look at radio maps of the sky shows a pronounced tilt, called a dipole, that astronomers are still unable to explain ...