An exoplanet is any planet beyond our solar system. Most of them orbit other stars, but some free-floating exoplanets, called ...

Astronomers in Australia detected a powerful radio signal, surprisingly originating from an old, defunct satellite only 4,500 km away.

KiDS J0842+0059 lies around 3 billion light-years away from Earth. It holds a stellar mass almost 100 billion times that of ...

Made from over 1,100 images captured by NSF-DOE Vera C. Rubin Observatory, the video begins with a close-up of two galaxies ...

Citizen scientists using the Kilonova Seekers platform spotted a stellar flash 2,500 times brighter than before, allowing ...

Over time, these stars became known as Wolf-Rayet stars (Charles Wolf was a French astronomer, and helium was first detected by the French scientist Georges Rayet and others), and astronomers came to ...

A vast filament of gas stretching across the cosmos may help solve the mystery of the Universe’s missing matter. Astronomers have identified a massive filament of hot gas connecting four galaxy ...

"We have discovered a galaxy that has been 'perfectly preserved' for billions of years, a true archaeological find that tells ...

A NASA satellite that’s been orbiting as space junk since 1967, Relay 2, emitted an unexpected, powerful radio burst that ...

A rare nova, V462 Lupi, is making a bright appearance in the night sky in the Lupus constellation. Here's what to know.

In the vast expanse of space, mysterious phenomena often leave even the most seasoned astronomers scratching their heads. One ...

Most disks observed were about 30 astronomical units wide, roughly 30 times the Earth-Sun distance. The presence of intricate structures in such early systems implies a parallel evolution of infant ...