All is not calm in the cosmos.
ESA/Hubble and NASA
Stargazing seems such a quiet, calm activity. But whether our eyes can see or not, those stars out there are in constant flux. Time-domain astronomy studies how cosmic objects change with time.
A new development could mean vastly increase data transfer over optical fibre cables.
The design of a new chip to detect the twisted nature of light waves could pave the way for next generation of optical communication technologies.
The High Energy Stereoscopic System (HESS) was instrumental in determining the origin of cosmic rays.
A new study suggests that mysterious high energy cosmic rays might originate from the supermassive black hole at the centre of our galaxy.
A needle in a haystack? Pan Starrs telescope is scanning billions of galaxies to find the black holes emitting gravitational waves.
The hunt to find the source of the gravitational waves detected by LIGO on the sky is only just starting.
Don’t get too close.
The spectacular science of quasars, no hair theorum and spaghettification.
Wes Mountain/The Conversation
It's taken centuries for our understanding of gravity to evolve to where it is today, culminating in the discovery of gravitational waves, as predicted by Albert Einstein a century ago.
Massive bodies can send ripples through space time in the form of gravitational waves.
The long awaited discovery of gravitational waves has sent ripples through the scientific world. Here top experts respond to the historic announcement.
When two black holes collide, the resulting gravitational ripples can be felt across the cosmos.
The detection of gravitational waves is the final confirmation of Einstein's theory of general relativity, and opens up a new window into the cosmos.
Binary black holes come in a variety of forms, but they are all astounding.
NASA, ESA, and G. Bacon (STScI)
It takes something as stupendous as the merger between two black holes to generate detectable gravitational waves. Here's how such incredible cosmic objects form.
Computer simulation of two merging black holes producing gravitational waves.
If you understand how a trampoline works, you'll be able to understand what gravitational waves are.
Two black holes collide.
University of Glasgow
It is the physics discovery of the century – even bigger than the Higgs Boson. Here's how it happened and what it means, by a key member of one of the lead teams
Supermassive black holes, containing as much mass as millions or billions of suns, exist at the centre of all galaxies, including our own Milky Way.
NASA Goddard Space Flight Center
Tanya Hill speaks with Meg Urry about distant galaxies and the supermassive black holes that lurk in their centres.
A visualisation of gravitational waves emitted by two orbiting supermassive black holes.
A new study has failed to find evidence of gravitational waves, but that doesn't mean Einstein was wrong about their existence.
A simulated view of a black hole.
The information paradox is one of the great mysteries in our understanding of black holes. But has the famous theoretical physicist Stephen Hawking found the solution?
There may be more and bigger black holes out there than we thought. Do we need a map?
Meet the supermassive black hole that defied the model.
Black holes don’t deserve their bad reputation, says study.
Black holes may not be the ferocious killers they are made out to be, suggests study.
Artist’s impression of two white dwarf stars destined to merge and create a Type Ia supernova in 700-million years time.
Two white dwarfs found orbiting each other at the centre of a planetary nebula are now known to have enough mass that they will eventually trigger a special kind of supernova, according to research published…
Gemini North observatory, on Hawaii’s Mauna Kea, shoots a laser beam into the night sky to create an ‘artificial star’, part of a process that helps astronomers remove blurring from any images of galaxies.
Gemini Observatory and Association of Universities for Research in Astronomy
A supermassive black hole has been found in an ultracompact dwarf galaxy – the smallest galaxy known to contain such a massive black hole. This finding, published today in Nature, suggests that supermassive…
Scary but fascinating.
NASA and M. Weiss (Chandra X -ray Center)
Katherine Mack, astrophysicist at the University of Melbourne, answered questions posed by the public on Reddit. The Conversation has curated the highlights. Dark Matter How do you explain dark matter…
Artist’s impression of a microquasar, such as the newly-discovered MQ1 in the M83 galaxy.
TD Russell (ICRAR-Curtin) using the BINSIM visualisation code by R Hynes (LSU)
A black hole with extremely powerful jets has been found in the nearby galaxy Messier 83 (M83) by a team of Australian and American researchers, as we report in the journal Science today. Black holes are…