241–260 of 266 results

Black Holes

Black Hole Spews Atoms

Observations reveal ionized metals in the jet shot out by a black hole, long-sought information that will help astronomers understand how these objects create their powerful beams.

Black Holes

Astronomers Discover Black Hole's Dieting Strategy

The Milky Way's central supermassive black hole eats only a fraction of the gas available to it. New X-ray observations suggest how the beast manages to stay so trim when faced with a feast.

Pulsar and supermassive black hole

Black Holes

New Pulsar Explores Heart of Milky Way

A pulsar discovered last April is helping astronomers measure the magnetic field surrounding our galaxy’s central black hole.

Black Holes

Snack Starts Swinging Around Black Hole

Astronomers around the world are watching as the gaseous object called G2 heads for a close pass around the Milky Way's central supermassive black hole. Now it looks like the distended cloud is starting to swing back toward us.

Black Holes

Magnifying Quasars

Twinkle, twinkle, quasi-star: cosmic lenses could tell us what you are.

Black Holes

A Cosmic Sleight of Hand at Our Galaxy's Supermassive Black Hole

Astronomers have been waiting for our galaxy’s slumbering supermassive black hole to stir for a snack. Instead, the universe handed them a different treat.

Black Holes

Brilliant GRB Blast with an Amateur Twist

An exceptionally powerful gamma-ray burst on April 27th wowed astronomers around the world — and its fading was tracked by an alert backyard observer.

Black Holes

When Supergiants Explode

Astronomers have announced a new class of gamma-ray bursts, possibly created when some of the biggest stars in the universe go supernova.

Black Holes

Black Hole Wakes for a Light Snack

Astronomers might have glimpsed a supermassive black hole snacking on a brown dwarf in a galaxy 47 million light-years away.

Black Holes

Can Stars Form in our Galaxy's Center?

Observations of Milky Way’s chaotic center show hints of stars forming just two light-years away from our galaxy’s supermassive black hole.

Quasar

Black Holes

Fifty Years of Quasars...And Fifty More?

As we celebrate the golden anniversary of quasars' discovery, some astronomers are pausing to question the direction of the field.

Black Holes

Mystery Structure Around Black Hole

An X-ray flare revealed a bizarre black hole binary system, where a mysterious, moving structure blocks its visible light.

Black Holes

Black Hole Caught Spinning?

X-ray observations of a distant supermassive black hole might end a decades-long debate over the nature of these X-ray signals. But not everyone’s convinced that the observations are what they appear to be.

Black Holes

Baby Black Hole Discovered

Astronomers investigating a supernova remnant see nothing but swirls of gas. The lack of stellar remains means the explosion must have birthed a black hole only 1,000 years ago.

Binary white dwarf

Black Holes

Spacetime Ripples on the Horizon?

Scientists might be closer to detecting one prediction of Einstein's theory of gravity than they thought they were.

NGC 1277

Black Holes

A Big Black Hole in a Small Galactic Pond

A record-breaking black hole lurking at the center of a compact galaxy weighs about 17 billion Suns, a new study finds. Now astronomers are wondering: how did such a small galaxy come to harbor a leviathan?

Black hole tilt

Black Holes

Tilt a Black Hole and Watch What Happens

A simulation published in yesterday's Science shows how black holes govern their surroundings. Watch a black hole work its magic in this new video.

Black Holes

The Flares from Milky Way’s Black Hole

Our galaxy’s central supermassive black hole emits regular, mysterious X-ray flares. For the first time, NASA’s newest sharp-eyed telescope has captured a high-energy view of the action.

Black Holes

Beads on a Galaxy-Scale String

A new image from the Australia Telescope Compact Array shows a series of brilliant knots along the jet shooting from a supermassive black hole. While not the first sighting of a string of pearls gracing a galaxy's jet, the new image is a striking look at a mysterious phenomenon.

stars orbiting black hole

Black Holes

Star Zips around Milky Way's Central Black Hole

Astronomers announced that they've successfully tracked a star that takes less than 12 years to whip around the Milky Way's central black hole. The star isn't so special on its own, but combined with other observations it might help unwrap the region's mysteries.