The coldest and densest molecular gas clouds in the interstellar medium can have temperatures of 10 K (-505 °F/-263 °C), ...

Our best models of the cosmos don't add up — but that could change if the universe is actually made of a viscous 'fluid,' a ...

NASA's SPHEREx telescope unveiled its first full-sky map of the universe, combining more than 100 infrared observations into ...

Cosmologists are quietly confronting a possibility that would have sounded absurd a generation ago: the standard picture of a ...

There may not be as nearly as many small galaxies in the early universe as astronomers predict there should be, which has big ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...

A colossal structure in the distant Universe is defying our understanding of how the Universe evolved. In light that has traveled for 6.9 billion years to reach us, astronomers have found a giant, ...

Scientists using NASA's James Webb Space Telescope now think the "little red dots" spotted in the early universe could be a new kind of space object. They call it a "black hole star." Credit: T.

China is preparing to send a new kind of eye into orbit, a space observatory built to map the cosmos with a breadth and ...

An international team of astronomers has achieved a first in probing the early universe, using the James Webb Space Telescope (JWST), detecting a supernova—the explosive death of a massive star—at an ...

How common are super-Earth exoplanets throughout the universe? This is what a recent study published in Science hopes to address as an international team of more than 60 researchers used a well-known ...