Illustrations of Neutron Merger and Black Hole A new study using Chandra data of GW170817 indicates that the event that produced gravitational waves likely created the lowest mass black hole known. (Credit: NASA/CXC/M.Weiss)

New era of astronomy uncovers clues about the cosmos

New era of astronomy uncovers clues about the cosmos An illustration of two neutron stars spinning around each other while merging. NASA/CXC/Trinity University/D. Pooley et…

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This image of Comet Lulin was taken by Swift on January 28, 2009. It shows data obtained by Swift’s Ultraviolet/Optical Telescope (blue and green) and X-Ray Telescope (red). The image of the star field (white) was acquired by the Digital Sky Survey. At the time of the observation, comet Lulin was 99.5 million miles from Earth and 115.3 million miles from the sun. The ultraviolet light comes from hydroxyl molecules and shows that, at this time, Lulin was shedding 800 gallons of water every second. D. Bodewits/Swift/NASA, CC BY-ND

Swift’s telescope reveals birth, deaths and collisions of stars through 1 million snapshots in UV

Swift’s telescope reveals birth, deaths and collisions of stars through 1 million snapshots in UV Technicians prepare Swift’s UVOT for vibration testing on Aug. 1,…

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An artist’s depiction of a pair of neutron stars colliding. NASA/Swift/Dana Berry

We’re going to get a better detector: time for upgrades in the search for gravitational waves

We’re going to get a better detector: time for upgrades in the search for gravitational waves An artist’s depiction of a pair of neutron stars…

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Neutron star merger. Credit: NASA's Goddard Space Flight Center/CI Lab

Signals from a spectacular neutron star merger that made gravitational waves are slowly fading away

Signals from a spectacular neutron star merger that made gravitational waves are slowly fading away Neutron star merger. Credit: NASA’s Goddard Space Flight Center/CI Lab…

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The Milky Way seen in infrared. NASA/JPL-Caltech/S. Stolovy (SSC/Caltech)

Astronomers may have just discovered a dozen black holes in the centre of our galaxy

Astronomers may have just discovered a dozen black holes in the centre of our galaxy The Milky Way seen in infrared. NASA/JPL-Caltech/S. Stolovy (SSC/Caltech) Phil…

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Astronomers using ESO’s MUSE instrument on the Very Large Telescope in Chile have discovered a star in the cluster NGC 3201 that is behaving very strangely. It appears to be orbiting an invisible black hole with about four times the mass of the Sun — the first such inactive stellar-mass black hole found in a globular cluster. This important discovery impacts on our understanding of the formation of these star clusters, black holes, and the origins of gravitational wave events.This artist’s impression shows how the star and its massive but invisible black hole companion may look, in the rich heart of the globular star cluster. Credit: ESO/L. Calçada/spaceengine.org

Odd Behaviour of Star Reveals Lonely Black Hole Hiding in Giant Star Cluster

Odd Behaviour of Star Reveals Lonely Black Hole Hiding in Giant Star Cluster Astronomers using ESO’s MUSE instrument on the Very Large Telescope in Chile…

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Artist s impression of merging neutron stars. Author University of Warwick/Mark Garlick, CC BY-SA

How crashing neutron stars killed off some of our best ideas about what ‘dark energy’ is

How crashing neutron stars killed off some of our best ideas about what ‘dark energy’ is Artist s impression of merging neutron stars. Author University…

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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,…

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On 17 August 2017, the Laser Interferometer Gravitational-Wave Observatory (LIGO) and the Virgo Interferometer both detected gravitational waves from the collision between two neutron stars. Within 12 hours observatories had identified the source of the event within the lenticular galaxy NGC 4993, shown in this image gathered with the NASA/ESA Hubble Space Telescope. The associated stellar flare, a kilonova, is clearly visible in the Hubble observations. This is the first time the optical counterpart of a gravitational wave event was observed. Hubble observed the kilonova gradually fading over the course of six days, as shown in these observations taken in between 22 and 28 August (insets). Credit: NASA and ESA. Acknowledgment: A.J. Levan (U. Warwick), N.R. Tanvir (U. Leicester), and A. Fruchter and O. Fox (STScI)

Hubble observes source of gravitational waves for the first time

Hubble observes source of gravitational waves for the first time The NASA/ESA Hubble Space Telescope has observed for the first time the source of a…

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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…

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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…

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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…

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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…

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