21–40 of 144 results
3C 273

Black Holes

Rotating Gas in a Quasar’s Heart

Astronomers have “imaged” gas as it orbits a supermassive black hole some 2 billion light-years away.

Illustration of black holes merging

Black Holes

What LIGO Teaches Us About Black Holes

The rising count of gravitational-wave events is giving us a new look at a once-invisible population of black holes.

Illustration of black holes merging

Black Holes

Gravitational-Wave Observatories Bag Four Black-Hole Collisions

A re-analysis of data from LIGO and Virgo brings the number of gravitational-wave detections to 11, including the most distant and most powerful black-hole merger yet discovered.

Black Holes

A Black Hole X-Ray Binary Rises

New observations have captured a feeding black hole in our galaxy as it bursts onto the scene.

hotspot near event horizon

Black Holes

Gas Seen Moving Near the Event Horizon

Astronomers have detected three flares from near our galaxy’s central black hole that look like gas closely orbiting the unseen object.

Cygnus A in radio

The Black Hole Files with Camille Carlisle

Odd Jets Might Signal Dual Black Holes

Off-kilter, curved, and otherwise unusual beams of plasma from galaxies’ cores might track the dueling dances of two supermassive black holes.

Still from simulation of two supermassive black holes merging

The Black Hole Files with Camille Carlisle

Video: The Glow of Spiraling Black Holes

New calculations reveal what two supermassive black holes about to merge would look like in ultraviolet and X-rays.

Chandra COSMOS Legacy Survey

Black Holes

Middleweight Black Holes Provide Window to Early Universe

How did supermassive black holes form? Two studies discovered dozens of middling-mass black holes in dwarf galaxies to fuel an ongoing debate.

Black Holes

A Rapidly Spinning Black Hole with a Warped Disk

An X-ray telescope recently installed on the International Space Station has provided a detailed look at a black hole feeding off its companion star.

Stars orbit black hole

Black Holes

Star Swings Around Black Hole, Tests Gravity

Astronomers have seen a star’s light redden as it passed our galaxy’s central black hole, just as general relativity predicts.

Black Holes

Scientists See Strong Evidence of Rare Middle-weight Black Hole

New observations give more fuel to the concept of intermediate-mass black holes.

tidal disruption event illustration

The Black Hole Files with Camille Carlisle

Black Hole Destroys Star and Shoots Jet

Astronomers have watched the growth of a jet fueled by a shredded star.

G2 en route to black hole

Stellar Science

More Mystery Objects in the Galactic Center

Astronomers have discovered three more red, dusty objects near the Milky Way’s central black hole that could be merged stars.

Black Holes

Do Big Black Holes Wander the Galaxy?

New simulation work suggests that galaxies like the Milky Way could be home to a dozen supermassive black holes.

X-ray binaries around galactic center (art)

Black Holes

Our Galaxy's Center Might Hold Thousands of Black Holes

A new study has uncovered a dozen stellar-mass black holes within 3 light-years of the supermassive black hole at our galaxy’s core — and these might be just the tip of the iceberg.

Black Holes

Physicist Proposes Alternative to Black Holes

A physicist has incorporated a quantum mechanical idea with general relativity to arrive at a new alternative to black hole singularities.

Ultraluminous X-ray Source

Stellar Science

Neutron Star Powers Ultraluminous X-rays

It turns out that neutron stars — not black holes — power at least some ultraluminous X-ray sources.

The torus at the center of M77 / NGC 1068

Black Holes

Astronomers Watch Donut Rotate Around Supermassive Black Hole

Astronomers have detected a torus rotating around the supermassive black hole at the center of spiral galaxy Messier 77, collecting observations that may shed light on why these weird structures exist.

binary supermassive black hole

Stellar Science

60-Second Astro News: Merging Black Holes, Distant Super-Supernova, and Arecibo's Fate

Supermassive black holes en route to merger have strange dynamics in their gas disks. Astronomers have spotted the most distant spectroscopically confirmed supernova. And NSF decides the fate of the Arecibo Observatory.

Reverberation mapping

Black Holes

60-Second Astro News: Black Holes Galore

Supermassive black holes are difficult to observe and measure, yet they have profound effects on their host galaxies. Read up on the latest black hole discoveries presented at the Washington D.C. meeting of the American Astronomical Society.

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