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An artist’s impression of the collision of two black holes

Astronomy & Observing News

Gravitational-Wave Detections Surge with Latest Release

Astronomers have released the newest list of gravitational-wave detections, almost doubling the number of known signals from colliding black holes.

Stellar graveyard graphic for LIGO collaboration's fourth observing run

Black Holes

Have We Found the Black Hole Desert?

Astronomers disagree on whether they’ve found evidence that stars don’t make certain sizes of black hole.

Gravitational waves

Astronomy & Observing News

Gravitational Wave Detectors Spot Merging Black Holes That Have Merged Before

Two recent discoveries of black hole mergers add to the evidence that such mergers happen over and over again.

gravitational-wave artwork

Astronomy & Observing News

Celebrating 10 Years of Gravitational-Wave Discoveries

The LIGO gravitational-wave detector celebrates its 10th birthday with the clearest signal yet from a pair of merging black holes.

big black hole merger

Astronomy & Observing News

New Black Hole Merger Breaks Record

Gravitational-wave astronomers have detected the collision of two beefy black holes, which created the most massive merger-made black hole found thus far.

Astronomy & Observing News

“Shattering” NSF Budget Proposal Threatens Gravitational Wave Science

One of two Nobel Prize-winning LIGO sites is on the budgetary chopping block.

LIGO, Virgo, KAGRA

Astronomy & Observing News

Status Report: Gravitational Waves

Astronomers at the International Astronomical Union report that we have now detected more than 200 gravitational-wave events, most the merger of two black holes.

swirl of hot, yellow-orange material around black hole as black hole eats the material

Astronomy & Observing News

Neutron Star Eaten by Small Black Hole (Probably)

Gravitational-wave astronomers have identified ripples in spacetime from the coalescence of a neutron star with what’s likely one of the smallest black holes ever found.

An artist’s impression of the collision of two black holes

The Black Hole Files with Camille Carlisle

Black Hole Rain

The planned LISA gravitational-wave detector might discover a shower of hundreds of small black holes falling in galactic centers.

Illustration of a supermassive black hole binary system

Astronomy & Observing News

Gravitational Waves from Supermassive Black Holes Revealed

Radio observatories across the globe have found compelling evidence for the existence of very-low-frequency gravitational waves.

Gamma-ray burst jets pierce cocoon

Astronomy & Observing News

We Could Soon “Hear” the Gravitational Waves of Dying Stars

Massive, dying stars — behemoths tens of times the Sun's mass — should emit gravitational waves that we can hear with LIGO.

Gravitational waves from GW190521

Astronomy & Observing News

The Challenge of Weird Black Hole Mergers

When spacetime shivers last only a fraction of a second — as in the case of the massive-black-hole merger GW190521 — astronomers struggle to uncover their origins.

a range of lines with blue dots on top and bottom creating a shape similar to a bird with spread wings. red and yellow dots run along the outline of the bottom half, all on a black background.

The Black Hole Files with Camille Carlisle

Third Gravitational-Wave Catalog Released

The latest results from LIGO, Virgo, and KAGRA bring several key revelations, including that black holes tend to come with certain masses.

A black-hole binary

Astronomy & Observing News

Jumping the Gap to Probe Large Black Holes

Gravitational-wave detectors should be able to locate a population of huge black holes soon. A new study predicts when we'll find them, and what they'll teach us.

An artist’s impression of the collision of two black holes

Astronomy & Observing News

Redefining a Heavy Collision

Could the biggest — literally — gravitational-wave discovery yet be something other than what it initially seemed?

Timing an array of pulsars

Astronomy & Observing News

Pulsars Show Hint of Gravitational-wave Background

Duos of supermassive black holes tangoing throughout the universe make their own music, and astronomers may have picked up a hint of the tune.

Artist’s impression of a binary neutron star and the gravitational waves the system emits.

Astronomy & Observing News

How to Warn of Imminent Neutron Star Collisions

What if gravitational-wave observatories could send out alerts right after — or even before — receiving signals of neutron star collisions?

big black hole merger

Astronomy & Observing News

Big Black Holes Dominate New Gravitational-Wave Catalog

Gravitational-wave scientists have unveiled their latest catalog of events, revealing a surprising number of massive black holes.

Gravitational waves from GW190521

Astronomy & Observing News

Record-breaking Signal Reveals New Population of Black Holes

Gravitational-wave observatories have detected the most massive black hole merger yet, and it's challenging our ideas of black hole formation.

visualization of GW190814 gravitational-wave event

Black Holes

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.