We measure the “warmness” of the dark matter, i.e. the comoving root-mean-square thermal velocity v hrms (1) , with nearly 3000 spiral galaxy rotation curves in the ...

The universe's first galaxies were hot messes, according to a recent study. During their younger days, they were wild, ...

Astronomers caught a rogue black hole tearing apart a star 2,600 light-years from its galaxy’s center — a first-of-its-kind ...

The NSF NOIRLab-operated Gemini North telescope captured stunning imagery of galaxies UGC 12914 and UGC 12915, aka 'Taffy ...

Using the James Webb Space Telescope, astronomers have captured the clearest picture yet of how galaxies formed in the early universe.

The Vera Rubin Observatory has just delivered its first cosmic revelation—and it’s a spectacular one. During its Virgo First ...

A newly formed black hole, GW190412, was captured fleeing at 180,000 km/h; scientists track its entire cosmic trajectory for the first time.

Two recently observed black hole mergers, occurring just weeks apart in late 2024, have opened an extraordinary new window ...

For the first time, scientists have the calculations and simulations to explain mysterious flashes from the galaxy OJ 287.

For the first time, scientists have the calculations and simulations to explain mysterious flashes from the galaxy OJ 287.

In the 10 years since the first detection of gravitational waves, we have detected hundreds of these waves produced by the ...