The planet formed 50 million years after the dinosaurs died, making it incredibly young in cosmic terms.

The nova eruptions come about when a white dwarf steals too much matter from a close red giant companion.

Astronomers have sighted the oldest known stellar explosion, dating back to when the universe was less than a billion years ...

“The fact that we can now watch stars explode and immediately see the structure of the material being blasted into space is ...

Astronomers have produced the first continuous, two-dimensional maps of the outer edge of the sun's atmosphere, a shifting, ...

Compelling evidence that the structure of matter surrounding supermassive black holes has changed over cosmic time has been ...

Astronomers are learning more about the origins of supermassive black holes after new data is revealed from a 20-year-long ...

A seven-hour gamma-ray burst, GRB 250702B, stuns astronomers and hints at powerful new cosmic engines still unknown to science.

The exoplanet, discovered by Northwestern University astronomers, orbits two suns exactly like Luke Skywalker's fictional ...

Astronomers capture the twinkle of a distant quasar, RX J1131, and reveal the secret size of a black hole's fiery corona.

Critics argue the satellites, billed as a way to harness solar energy at night, could hamper sky observations and may pose a ...

A sudden X-ray flare from a supermassive black hole in galaxy NGC 3783 triggered ultra-fast winds racing outward at a fifth the speed of light—an event never witnessed before. Using XMM-Newton and ...