Active galactic nuclei are supermassive black holes at the center of certain galaxies. As matter falls into these black holes ...

The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes ...

"This is how you solve the universe-breaking problem." ...

Nick Hague and Suni Williams spent six hours working on NICER, AMS and other equipment outside the International Space ...

Active galactic nuclei (AGN) are among the most energetic phenomena observed in the universe. These luminous objects, powered ...

After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.

Astronomers have captured the most detailed infrared images yet of an active galactic nucleus (AGN), using the Large ...

NASA Goddard Space Flight Center runs down the best-known Black Holes in the Milky Way galaxy and the Large Magellanic Cloud. Credit: NASA Goddard Space Flight Center ...

Scientists have detected emanating from the nucleus of a galaxy relatively close to our Milky Way flashes of X-rays gradually increasing in frequency that seem to be coming from a white dwarf - a ...

To enjoy skiing or snowboarding more, you need quality gear that keeps you warm and dry, looks good, and makes your ...

The Pittsburgh Penguins’ 4-2 loss against the Seattle Kraken on Tuesday at PPG Paints Arena was a fitting conclusion to a ...

Conservative leader Kemi Badenoch has challenged Sir Keir Starmer over the government's handling of the economy, saying the ...