Astronomers used the James Webb Space Telescope for the largest and deepest sample of galaxy groups, some of which were up to ...

There are thousands of galaxies contained in this image, including a cluster that looks to us as it was when the universe was ...

The "afterglow" of the universe is an important piece of evidence for the Big Bang. This background radiation also provides ...

Galaxies speckle the heavens like stars in a stunning new photo of the deep and distant universe.

NASA's newest space telescope, on a mission to study origins of universe, snapped incredible images of the cosmos 2 months ...

Near the constellation Leo, JWST turned its gaze slightly aside. In the dim stars of Sextans, it spotted something ...

Scientists discovered one other curiosity between the relics: a faint glow at the center of the cluster. This could be a ...

Researchers suggest powerful bursts from magnetars—collapsed stars with strong magnetic fields—may have contributed up to 10 ...

Scientists have found evidence for a cosmic collision in the Perseus cluster, a group of thousands of galaxies not far from ...

There’s a new class of cosmic object in town. And it might just overturn our understanding of black holes and galaxy ...

One of the most famous and beautiful cosmic sights shows its colors in this new image from the Hubble Space Telescope. The Veil Nebula is the remnant of a massive star which exploded in a supernova 10 ...

Astronomers have discovered a mysterious object in space that may be the smallest galaxy in the Universe, or the oldest star cluster in the Milky Way.