Astronomers using NASA’s Hubble Space Telescope have found that Markarian 231 (Mrk 231), the nearest galaxy to Earth that hosts a quasar, is powered by two central black holes furiously whirling about ...

NASA’s Hubble Space Telescope was used to find two supermassive black holes in Markarian 231. (Credit: Space Telescope Science Institute) In a staggering find, scientists recently announced that the ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. That means studying 3C 273 has been like staring into the headlights of an oncoming car for ...

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The First Church of Christ, Scientist, and we’ve always been transparent about that. The church publishes the ...

Markarian 231 won't win any galactic beauty contests. Seen through the Hubble Space Telescope, it's a bit lopsided and dull. But boy, what a personality. This galaxy near the tail of the Big Dipper is ...

Astrophysicists have found two supermassive black holes in Markarian 231, the nearest quasar to Earth. The discovery of two supermassive black holes -- one larger one and a second, smaller one -- are ...

The No. 1 University of Arizona men’s basketball team won 96-75 against the No. 12 University of Alabama on Saturday, Dec. 13, at 7:30 p.m. in Birmingham, Ala. This marks Arizona’s ninth consecutive..

NASA’s Hubble Space Telescope has photographed a set of wispy, goblin-green objects that are the ephemeral ghosts of quasars that flickered to life and then faded. The glowing structures have looping, ...

Astronomers using NASA’s Hubble Space Telescope have found that Markarian 231 (Mrk 231), the nearest galaxy to Earth that hosts a quasar, is powered by two central black holes furiously whirling about ...