A newly discovered galaxy is challenging what scientists thought they knew about galactic collisions. Located 567 million ...

Einstein rings help scientists study dark matter and cosmic expansion. Euclid will find thousands more lenses to map the ...

The Hubble Space Telescope has captured this striking image of an unusual galaxy with a bullseye structure, as nine rings ...

A small blue dwarf galaxy passed through the massive Bullseye galaxy. This impact created nine rings of new stars.

A rare ring of light surrounding a galaxy nearly 590 million light-years away from Earth has been discovered by a space ...

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