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visualization of GW190814 gravitational-wave event

The Black Hole Files with Camille Carlisle

Gravitational Wave Detectors Find Mystery “Mass Gap” Object

Astronomers have caught a black hole colliding with a mysterious companion that might be either one of the most massive neutron stars or the smallest black hole ever detected.

Black Holes

What Kinds of Black Hole Partners Merge?

New research on black hole mergers reveals that the black hole pairs tend to have similar masses — suggesting that they start out as massive stellar pairs.

Illustration of black hole merger

The Black Hole Files with Camille Carlisle

Mismatched Black Holes Merge

For the first time, the LIGO and Virgo gravitational-wave detectors have "heard" gravitational waves from an unequal pair of black holes.

Two neutron stars prior to merger

Stellar Science

Gravitational Waves Put Ruler to Neutron Stars

Scientists have combined observations of gravitational waves from a neutron star collision with nuclear theory to shed light on the size and nature of neutron stars.

Neutron Star Pair Collides (art)

Stellar Science

Gravitational Waves from Second Neutron-star Collision Observed

Scientists with the Laser Interferometer Gravitational-wave Observatory (LIGO) and Virgo collaborations have announced the detection of a second pair of neutron stars that went bump in the night.

Illustration of black hole merger

The Black Hole Files with Camille Carlisle

More Black Hole Mergers Found in LIGO Data

Analysis by an independent team has ferreted out seven candidates for gravitational-wave events from merging black holes.

Simulation of neutron star - black hole merger

Black Holes

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.

Illustration of black holes merging

april 1st

Listen Up: Get Gravitational-wave Alerts

The Laser Interferometer Gravitational-wave Observatory (LIGO) will soon begin a new round of observations. Now you can find out about the discoveries as they happen.

Illustration of black holes merging

The Black Hole Files with Camille Carlisle

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.

Astronomy & Observing News

Low-key supernova marks possible birth of neutron star duo

A massive star lost most of its mass before exploding and creating a neutron star — and a second nearby neutron star might have been the thief.

Stellar Science

Seen at Last: A Superfast Jet Streams Away from Neutron-star Smashup

A new finding suggests that LIGO’s neutron-star merger was a typical gamma-ray burst after all.

Neutron star collision

Stellar Science

Gravitational Waves Shed Light on Neutron Star Interiors

The gravitational-wave detection last year of a neutron star merger has revealed details on neutron star structure, ruling out exotic quark matter in the objects’ cores.

Cocoon scenario explains observations of GW170817

Stellar Science

Neutron-star Smashup Might Have Choked Its Own Jet

LIGO’s neutron-star smashup might not have been a typical short gamma-ray burst. If true, the detection points toward a new class of gamma-ray bursts — but the jury is still out.

Neutron star collision

Cosmology

Astronomers Catch Gravitational Waves from Colliding Neutron Stars

Spacetime ripples from the neutron star smash-up usher in the age of multi-messenger astronomy.

Cosmology

2017 Nobel Goes to Gravitational Waves

Three American physicists have received the Nobel Prize in physics for their contributions to the discovery of gravitational waves.

Virgo

Black Holes

Fourth Gravitational Wave Event Detected

Teaming up with LIGO, Europe’s Virgo detector has bagged its first gravitational waves. The three-observatory detection enabled scientists to better pinpoint the merging black holes’ location.

LSP in space

Spacecraft and Space Missions

Goodbye, LISA Pathfinder

The European Space Agency switched off its groundbreaking LISA Pathfinder mission this week.

merging black holes

The Black Hole Files with Camille Carlisle

LIGO Detects Third Black Hole Merger

Scientists with the gravitational-wave observatory announce another discovery, this time of a black hole merger twice as far away as previous detections.

two black holes in the moments before a catastrophic collision

Black Holes

LIGO Detects Second Black Hole Collision

The gravitational wave observatory has detected a second event, heralding a new era in astrophysics. The day after Christmas last year, the cosmos quietly gifted scientists with gravitational waves — ripples in the fabric of spacetime – produced in a collision between two stellar-mass black holes. It’s the second event…

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