201–220 of 229 results

Galaxies

A Double Black Hole?

Strange emission from a distant galaxy paints an enigmatic picture of what’s happening inside its core. One solution: instead of one supermassive black hole, the galaxy hosts two trapped in a tight dance around each other.

Stellar Science

Downsizing a Black Hole

Astronomers have revealed a supposedly monster black hole to be rather ordinary in size.

Black Holes

Monster Burst Challenges Theories

Observations of one of the most powerful supernovas ever recorded suggest that the standard model for gamma-ray bursts might be missing a piece of the puzzle.

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.

Milky Way

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.

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.

Milky Way

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.

Milky Way

A Cosmic Sleight of Hand

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.

Space Missions

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.

Stellar Science

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

People, Places, and Events

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.

Space Missions

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.

Milky Way

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

Galaxies

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.