The Hubble telescope shows stars exploding near a giant plasma beam shooting out from a black hole. The beam, named M87 jet, is 3,000 light years long and is moving through space at almost the speed ...

The cooler, denser plasma appears dark against the raging surface of the sun in this view from a NASA spacecraft. When you purchase through links on our site, we may earn an affiliate commission. Here ...

A series of three powerful flares and associated explosions of solar material out across the Solar System have set Earth ...

Astronomers have solved the decade-long mystery of how a bizarre cosmic object toggles rapidly between "high" and "low" energy states: by launching plasma cannonballs from its orbit. The object in ...