A huge sun eruption combines with speedy solar wind from a "coronal hole" for a weekend aurora show, experts predict. A massive eruption on the sun that flung solar plasma toward Earth on Friday ...

Although we know that supermassive black holes (millions of times the mass of our sun) lurk at the center of most galaxies, ...

The black hole at the heart of galaxy SDSS1335+0728, located 300 million light-years away, was quiet for decades as it consumed little matter and was in a dormant state. But recently it suddenly lit ...

UPDATE: The Northern Lights could be visible in the U.S. tonight (March 26), appearing as far south as New York and Idaho due ...

The solar eruption, called a coronal mass ejection (or CME), exploded on Friday (March 21) even as a so-called "coronal hole" opened on the sun to unleash a separate high-speed stream of solar ...

Astronomers are investigating the longest and most energetic bursts of X-rays seen from a newly awakened black hole. Watching this strange behavior unfold in real time offers a unique opportunity to ...

Although we know that supermassive black holes (millions of times the mass of our Sun) lurk at the centre of most galaxies, their very nature makes ...