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Astrophysics

Listening for Gravitational Waves Using Pulsars

This computer simulation shows the collision of two black holes, which produces gravitational waves. Credits: SXS

Listening for Gravitational Waves Using Pulsars

Listening for Gravitational Waves Using Pulsars One of the most spectacular achievements in physics so far this century has been the observation of gravitational waves, ripples in space-time that result from masses accelerating in space. So far, there have been five detections of gravitational waves, […]

Stars that vary in brightness shine in the oral traditions of Aboriginal Australians

The star Betelgeuse varies in brightness. Flickr/A Tag , CC BY

Stars that vary in brightness shine in the oral traditions of Aboriginal Australians

Stars that vary in brightness shine in the oral traditions of Aboriginal Australians The star Betelgeuse varies in brightness. Flickr/A Tag , CC BY Duane W. Hamacher, Monash University Aboriginal Australians have been observing the stars for more than 65,000 years, and many of their […]

What could explain the mystery of how land formed on Mars without much water

NASA/JPL/University of Arizona, Author provided

What could explain the mystery of how land formed on Mars without much water

What could explain the mystery of how land formed on Mars without much water NASA/JPL/University of Arizona, Author provided Jan Raack, The Open University The surface of Mars, with its dune flows, gullies and slope movements, is the result of sediment being transported downwards in […]

Dark matter: The mystery substance physics still can’t identify that makes up the majority of our universe

Map of all matter – most of which is invisible dark matter – between Earth and the edge of the observable universe. ESA/NASA/JPL-Caltech, CC BY

Dark matter: The mystery substance physics still can’t identify that makes up the majority of our universe

Dark matter: The mystery substance physics still can’t identify that makes up the majority of our universe Map of all matter – most of which is invisible dark matter – between Earth and the edge of the observable universe. ESA/NASA/JPL-Caltech, CC BY Dan Hooper, University […]

Cosmic alchemy: Colliding neutron stars show us how the universe creates gold

Illustration of hot, dense, expanding cloud of debris stripped from the neutron stars just before they collided. NASA's Goddard Space Flight Center/CI Lab, CC BY

Cosmic alchemy: Colliding neutron stars show us how the universe creates gold

Cosmic alchemy: Colliding neutron stars show us how the universe creates gold Illustration of hot, dense, expanding cloud of debris stripped from the neutron stars just before they collided. NASA’s Goddard Space Flight Center/CI Lab, CC BY Duncan Brown, Syracuse University and Edo Berger, Harvard […]

LIGO announcement vaults astronomy out of its silent movie era into the talkies

Supercomputer simulation of a pair of neutron stars colliding. NASA/AEI/ZIB/M. Koppitz and L. Rezzolla, CC BY

LIGO announcement vaults astronomy out of its silent movie era into the talkies

LIGO announcement vaults astronomy out of its silent movie era into the talkies Supercomputer simulation of a pair of neutron stars colliding. NASA/AEI/ZIB/M. Koppitz and L. Rezzolla, CC BY Chad Hanna, Pennsylvania State University When LIGO detected its first gravitational wave back in September 2015, […]

At last, we’ve found gravitational waves from a collapsing pair of neutron stars

Artist’s impression of the collision of two neutron stars, the source of the latest gravitational waves detected. National Science Foundation/LIGO/Sonoma State University/A. Simonnet, Author provided

At last, we’ve found gravitational waves from a collapsing pair of neutron stars

At last, we’ve found gravitational waves from a collapsing pair of neutron stars Artist’s impression of the collision of two neutron stars, the source of the latest gravitational waves detected. National Science Foundation/LIGO/Sonoma State University/A. Simonnet, Author provided David Blair, University of Western Australia After […]

After the alert: radio ‘eyes’ hunt the source of the gravitational waves

The Australia Telescope Compact Array in Narrabri, NSW. David Smyth/CSIRO, Author provided

After the alert: radio ‘eyes’ hunt the source of the gravitational waves

After the alert: radio ‘eyes’ hunt the source of the gravitational waves The Australia Telescope Compact Array in Narrabri, NSW. David Smyth/CSIRO, Author provided Tara Murphy, University of Sydney and David Kaplan, University of Wisconsin-Milwaukee At 11:21pm Sydney time on Thursday August 17, 2017, an […]

Why astrophysicists are over the moon about observing merging neutron stars

Simulation of two neutron stars merging. NASA/AEI/ZIB/M. Koppitz and L. Rezzolla, CC BY

Why astrophysicists are over the moon about observing merging neutron stars

Why astrophysicists are over the moon about observing merging neutron stars Simulation of two neutron stars merging. NASA/AEI/ZIB/M. Koppitz and L. Rezzolla, CC BY Roy Kilgard, Wesleyan University When LIGO, the Laser Interferometer Gravitational-Wave Observatory, first detected gravitational waves from merging black holes, it opened […]