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

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

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

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

"We've always known that we need something to complete the puzzle, but we haven't really known what shape or form those missing pieces were going to be." ...

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 ...

In a scene straight out of science fiction, astronomers using NASA’s Hubble Space Telescope have spotted a massive black hole ...

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

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.

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

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