A compound lens forged by two galaxies is helping astronomers get a bead on the Hubble Constant and dark energy.

The Arecibo Message as it appears when its 1,679 bits are properly aligned on a grid (left), an annotated illustration ...

Researchers using the James Webb Space Telescope have discovered three massive galaxies from the early universe, revealing ...

It all looks so beautiful and peaceful. The images of other galaxies, such as the Andromeda Galaxy convey a similar feeling. However, these impressions are incorrect. Out there among the galaxies, the ...

We're celebrating Space.com's 25th birthday this week ... are two satellite galaxies of the Milky Way galaxy. Like with Andromeda, you should be able to spot both with just your eyes from a very dark ...

The Chandra X-ray Observatory is the darling of high-energy astrophysics. Famed for providing unequaled x-ray views of ...

The James Webb telescope has spotted three gigantic "red monster" galaxies that were spawned soon after the Big Bang. They're ...

Three ultra-massive galaxies from the early universe, named "red monsters" show star formation happened faster than believed.

Astronomers have identified three ultra-massive galaxies -- nearly as massive as the Milky Way -- already in place within the first billion years after the Big Bang. This surprising discovery was made ...

Some stars may transform into black holes without exploding into supernovae. Now, astronomers have finally spotted it as it ...

China's Wide Field Survey Telescope has captured an amazing view of the Andromeda Galaxy (M31). Credit: Space.com | footage ...

The highlight of the constellation Andromeda is a faint glowing smudge above the central star. The Andromeda Galaxy is the ...