New data reveals a 3-million-light-year filament connecting two galaxies, each of which hosts a supermassive black hole.

Astronomers have achieved a groundbreaking feat by capturing the first clear image of a star in another galaxy. This ...

Albert Einstein himself thought that the eponymous Einstein ring would be impossible to observe, but the Euclid telescope has ...

After a blue dwarf galaxy shot through it like an arrow, the large Bullseye now has nine rings—six more than any other galaxy ...

The structure is nearly 600 million light-years from Earth and is an early display of the nascent dark matter telescope's ...