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 ...

If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...

Astronomers have long thought the universe should look generally the same in every direction, but an anomaly in the radiation ...

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 ...

Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and that black holes appeared later. But some have proposed that it went the other ...

The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from ...

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 ...

Nobel laureate Dr. George Smoot, who conducted groundbreaking research into the origins of the universe, has died. He had ...