active galaxies

Astronomers see a Rare “Double Quasar” in a Pair of Merging Galaxies

What's better than a quasar? That's right, two quasars. Astronomers have spotted for the first time two rare double-quasars, and…

1 year ago

An Active Galaxy That Erupts Predictably Every 114 Days Or So

Computers are known for their ability to spot patterns.  It’s what they are good at, and over the last 50+…

1 year ago

New Research Reveals How Galaxies Stay Hot and Bothered

It's relatively easy for galaxies to make stars. Start out with a bunch of random blobs of gas and dust.…

3 years ago

Astronomers Count all the Photons in the Universe. Spoiler Alert: 4,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 Photons

Imagine yourself in a boat on a great ocean, the water stretching to the distant horizon, with the faintest hints…

3 years ago

Winds of Supermassive Black Holes Can Shape Galaxy-Wide Star Formation

The combined observations from two generations of X-Ray space telescopes have now revealed a more complete picture of the nature of…

7 years ago

Three Supermassive Black Holes Tango in a Distant Galaxy, Marking a Huge Discovery

In a galaxy four billion light-years away, three supermassive black holes are locked in a whirling embrace. It’s the tightest…

8 years ago

Galactic Mergers Fail to Feed Black Holes

[/caption] The large black holes that reside at the center of galaxies can be hungry beasts. As dust and gas…

11 years ago

J-E-T-S, Jets, Jets, Jets!

[/caption] It seems oddly appropriate to be writing about astrophysical jets on Thanksgiving Day, when the New York football Jets…

11 years ago