Hints of impossibly bright, massive objects in the infant universe have forced astronomers to rethink how the first cosmic ...

In the very young universe, just a fraction of its current age, astronomers have stumbled on a set of objects that refuse to ...

Hubble has revealed a strange cosmic object called Cloud-9, a dark matter–dominated cloud with no stars at all. Scientists ...

Astronomers have completed the most comprehensive census of active galactic nuclei (AGN) to date, providing the clearest ...

If scientists are able to inspect it in person, and they find that Mars was indeed once alive with microbes, we would know ...

New telescope instruments now reveal distant galaxies in detail, reshaping how astronomers map dark matter, star formation, ...

Galaxy clusters are formed by a dense packing of many galaxies, making them the most massive structures in the universe.

After combing through NASA’s James Webb Space Telescope’s archive of sweeping extragalactic cosmic fields, a small team of ...

Scientists have detected a surprisingly hot galaxy cluster dating back to the universe’s infancy. The cluster formed far ...

Observations of ultra-massive galaxies, each containing more than 100 billion stars, show that less than 2 billion years ...

The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about ...

We are going to be getting a lot of exciting new information about galaxies in 2026, says Chanda Prescod-Weinstein, who can't ...