The standard cosmological model (present-day version of "Big Bang," called Lambda-CDM) gives an age of the universe close to ...

The existence of massive, elliptical galaxies in the early universe has puzzled astronomers for two decades. An international ...

It's well established that the universe is expanding, but there's serious disagreement among scientists over how fast it's ...

You might think galaxies can’t ever find each other in our runaway cosmos, but it turns out gravity can sometimes overcome ...

The James Webb Space Telescope and the Chandra X-ray Observatory have captured the clearest image yet of a galaxy cluster in the making, seen when the universe was only one billion years old.

What: New analyses using early observations from the European Space Agency’s Euclid mission examine how galaxy mergers ...

Supermassive black holes rarely travel alone. Most large galaxies hide one at the center, and when galaxies collide, the two ...

A physicist proposes that the universe is not empty space, but is a viscous fluid, fueling the expansion and contraction we see.

Discover seven unusual galaxies defying scientific predictions, from impossibly bright early universe objects to astrophysics ...

The young galaxy cluster existed about 12.8 billion years ago and has an estimated mass 20 trillion times that of the sun ...

"JADES-ID1 is giving us new evidence that the universe was in a huge hurry to grow up." ...

A flat plane of dark matter beyond the Local Group may explain why nearby galaxies move away from us instead of falling ...