Scientists have named two systems of colliding supermassive black holes after Lord of the Rings locations, Gondor and Rohan.

A vast, flat sheet of dark matter may solve the long-standing mystery of why our neighboring galaxy Andromeda is speeding ...

In 1930, a young physicist named Carl D. Anderson was tasked by his mentor with measuring the energies of cosmic ...

You might think galaxies can’t ever find each other in our runaway cosmos, but it turns out gravity can sometimes overcome ...

"When Arp 220 is observed as a whole, it's one of the best places in the universe for astronomers to study how gravity, star formation, and powerful winds work together with strong magnetic fields to ...

What: New analyses using early observations from the European Space Agency’s Euclid mission examine how galaxy mergers ...

See amazing views of colliding galaxies NGC 520 and barred galaxy IC 4212 in imagery from the Siena Galaxy Atlas.

Some galaxies in the early universe were absolute powerhouses, churning out stars at rates that would dwarf the Milky Way's modest stellar production. These "monster galaxies," buried deep in dust ...

Intense radiation emitted by active supermassive black holes—thought to reside at the center of most, if not all, galaxies—can slow star growth not just in their host galaxy, but also in galaxies ...

In my January 23, 2026, “The Universe” column, I wrote about some of the biggest bangs the universe has to offer: exploding stars, hiccupping magnetars, stellar disruptions and colliding black holes.

Researchers propose a new technique to identify supermassive black hole binaries through gravitational lensing causing ...