Distance records are an excellent proxy for the state of the art in astronomy. Finding extremely faraway galaxies is hard. In ...

"You think that these things should not exist together, but there it is right in front of you, and it’s undeniable," ...

Astronomers have made the surprising discovery of oxygen and elements like heavy metals in the most distant known galaxy. The galaxy is 13.4 billion light-years away, meaning it formed in the early ...

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

Scientists at the University of Missouri have identified a small group of unusual objects in the early universe. Using NASA's ...

The discovery of thousands more galaxies with stars ringing their main disks could help astronomers study galactic evolution ...

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

Studying several tens of distant galaxies, an international team of astronomers found that galaxies had the same amount of dark matter relative to stars 6 billion years ago as they have now. If ...

Looking deep into space, and literally peering back in time, is like experiencing the universe in a house of mirrors where everything is distorted through a phenomenon called gravitational lensing.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...