Gravitational Waves

An artist's rendition of a LISA spacecraft.

This 'Game-Changer' Detector Will Hunt for Giant Ripples in Spacetime

Set to launch in 2035, the European Space Agency's LISA mission will listen for gravitational waves created by colliding black holes and neutron stars—and some might date nearly to the Big Bang

The Arecibo Observatory in Puerto Rico, one of the radio telescopes used to detect the pulses from pulsars in the new research. The telescope started to fall apart in 2020 and was decommisioned.

Gravitational Waves Create a Constant 'Hum' Across the Universe

Breakthrough research suggests the continuous ripples in spacetime could be caused by pairs of supermassive black holes, spiraling toward collisions

An artist’s rendering of the mysterious object, which has a mass about 2.6 times that of the sun and was consumed by a black hole some 23 times the mass of the sun. Astronomers say it's less massive than any known black hole and more massive than any known collapsed star, called a neutron star.

Distant Black Hole Collides With a Mysterious Object

Scientists detect what is either the heaviest known neutron star or the least massive black hole ever recorded

How It All Began: A Colleague Reflects On the Remarkable Life of Stephen Hawking

The physicist probed the mysteries of black holes, expanded our understanding of the universe and captured the world's imagination, says Martin Rees

Did a falling apple really influence Newtonian physics?

Sometimes, a Scientific “Eureka!” Moment Really Does Change the World

Your plastic credit card, microwaveable popcorn and erection enhancers all owe to a fortuitous moment of connection

Nicknamed the Hand of God, this pulsar wind nebula is powered by a pulsar: the leftover, dense core of a star that blew up in a supernova explosion. Before astronomers had any idea what they were, Jocelyn Bell Burnell found the signal of a pulsar in her telescope data in 1967.

Fifty Years Ago, a Grad Student’s Discovery Changed the Course of Astrophysics

By identifying the first pulsars, Jocelyn Bell Burnell set the stage for discoveries in black holes and gravitational waves

An artist's impression shows two tiny but very dense neutron stars at the point at which they merge and explode as a kilonova.

What the Neutron Star Collision Means for Dark Matter

The latest LIGO observations rekindle a fiery debate over how gravity works: Does the universe include dark matter, or doesn’t it?

Stephen Hawking with Isaac Newton's annotated copy of Principia Mathematica

Stephen Hawking's PhD Thesis Goes Online, Crashing Internet Servers

After less than a day on the internet, it racked up 60,000 downloads

An artist's impression of ripples in the fabric of space-time formed from the collision of two black holes.

Scientists Detect Fourth Gravitational Wave, Homing in on an Ancient Black Hole Collision

By triangulating measurements, scientists could soon detect these once elusive energy bursts on a weekly basis with greater precision than ever before

"Steve" the aurora was discovered by amateur skywatchers, who are helping scientists learn more about this atmospheric phenomenon.

Will the Next Great Scientific Discovery Be Made by Amateurs?

There are more options than ever to get involved, and your input can help solve big problems in science

Artist’s conception of two merging black holes, spinning in a nonaligned fashion.

Scientists Hear Two Even More Ancient Black Holes Collide

At this point, detecting ripples in the fabric of space-time is practically commonplace

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