21–40 of 154 results
Illustration of black holes merging

Black Holes

60-Second Astro News: Black Hole Hubbub

The Milky Way's black hole' flares unexpectedly, a distant black hole gets the hiccups, and a reanalysis of LIGO data shows the first detection of black hole "ringdown."

star in gravitational well

The Black Hole Files with Camille Carlisle

Galactic Center Gravity Test Confirmed

A second team of astronomers has now confirmed the light from a star passing near our galaxy’s central black hole behaved as predicted by Einstein’s theory of gravity.

Simulation of neutron star - black hole merger

Professional Telescopes

Gravitational-wave Detectors Come Online, Find Possible Black Hole-Neutron Star Crash

Only a month into a new observing run, gravitational-wave observatories have announced five new signals — one of which could turn out to be a black hole swallowing a neutron star.

Event Horizon Telescope 2017

Black Holes

How Does the Event Horizon Telescope Work?

The Event Horizon Telescope creates the image of a black hole shadow thanks to the precise coordination of a worldwide telescope network. Here’s how they do it.

shadow image of M87

Black Holes

Scientists Unveil First Black Hole Image

The Event Horizon Telescope collaboration has reconstructed the shadow of a supermassive black hole.

primordial black hole illo

Black Holes

Could Dark Matter Be Black Holes?

Astronomers are reconsidering primordial black holes as an answer to the invisible matter mystery, but recent observations disfavor at least some sizes of black hole.

Sgr A*

Black Holes

Piercing the Veil of Our Black Hole

Astronomers have overcome the interference of clumpy interstellar gas to catch a glimpse of the gas around the Milky Way’s central black hole.

Quasar (art)

Black Holes

Astronomers Discover Most Distant Lensed Quasar

The most distant magnified quasar known promises to shed light on the universe's early years.

Artist's concept of MAXI J1820+070

Black Holes

How “Light Echoes” Revealed a Black Hole’s Feeding Habits

Astronomers are taking a cue from bats, using a method similar to echolocation to map out the feeding environment around a black hole.

hotspot around black hole

Black Holes

Astronomers Use Annihilated Star to Clock Black Hole’s Spin

The glow of a star torn up by a supermassive black hole has enabled researchers to measure how fast the black hole whirls around.

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

The Black Hole Files with Camille Carlisle

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.

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