Gravitational waves

This image from NASA’s Chandra X-ray Observatory shows the location of different elements in the Cassiopeia A supernova remnant including silicon (red), sulfur (yellow), calcium (green) and iron (purple). Each of these elements produces X-rays within narrow energy ranges, allowing maps of their location to be created. The blast wave from the explosion is seen as the blue outer ring. Astronomers study supernova remnants to better understand how stars produce and then disseminate many of the elements on Earth and in the cosmos at large.

Gravitational waves at galaxy edges

When Neutron stars collide (artist's impression) Image Credit: NASA Goddard Space Flight Center/CI Lab

What are gravitational waves?

Illustration of two merging neutron stars. Credit: NSF/LIGO/Sonoma State University/A. Simonnet

Neutron stars’ afterglow brightens

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The 12 books of Christmas 2017

Southern spiral galaxy NGC 300, imaged using the Wide Field Imager (WFI) at ESO’s La Silla Observatory in Chile. Do spiral galaxies like these have populations of black holes lurking on the periphery? Credit: ESO

Do black holes lurk on galaxy edges?

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AI trained to seek out light-bending galaxies

An artist’s impression of two neutron stars merging and exploding as a kilonova. These rare events are expected to produce both gravitational waves and a short gamma-ray burst. Credit: ESO/L. Calçada/M. Kornmesse

Light From Gravitational Wave Source Detected

An illustration showing the merger of two black holes. Dark green indicates weak fields of gravitational waves, and bright violet indicates strong fields. Credit: Numerical-relativistic simulation: S. Ossokine , A. Buonanno (Max Planck Institute for Gravitational Physics) and the Simulating eXtreme Spacetimes project; scientific visualization: T. Dietrich (Max Planck Institute for Gravitational Physics), R. Haas (NCSA)

New gravitational wave detection announced

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Astronomers spot galaxy 5 billion lightyears away

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Potential gravitational waves found in galaxy

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UK-led gravitational wave telescope launched

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Gravitational waves detected for third time

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Black hole booted by gravitational wave

An artist's impression of two binary black holes in orbit around each other.
Credit: The SXS (Simulating eXtreme Spacetimes)

Scientists detect gravitational waves

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First direct evidence for cosmic inflation announced