active galaxies

Dust Ruins Another Way of Measuring Distance in the Universe

Astronomers are always searching for new ways to measure distance in the Universe, especially at the greatest distances where less…

3 weeks ago

Strong Evidence that Supermassive Black Holes Affect Their Host Galaxy’s Chemistry

Supermassive Black Holes (SMBHs) are impossible to ignore. They can be billions of times more massive than the Sun, and…

6 months ago

Webb Sees Organic Molecules in the Hearts of Galaxies, Surprisingly Close to Active Supermassive Black Holes

When the James Webb Space Telescope (JWST) launched, one of its jobs was studying galactic formation and evolution. When we…

1 year ago

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…

3 years 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+…

3 years 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.…

5 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…

5 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…

9 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…

10 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…

13 years ago