Black holes

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A new development could mean vastly increase data transfer over optical fibre cables. Shutterstock

Twisted light could dramatically boost internet speeds

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.
Wes Mountain/The Conversation

Timeline: the history of gravity

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. NASA

Gravitational waves discovered: top scientists respond

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. Henze, NASA

Gravitational waves discovered: the universe has spoken

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.
Two black holes collide. University of Glasgow

Gravitational waves found: the inside story

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

Speaking with: Meg Urry on supermassive black holes

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. CSIRO

Where are the missing gravitational waves?

A new study has failed to find evidence of gravitational waves, but that doesn't mean Einstein was wrong about their existence.
Artist’s impression of two white dwarf stars destined to merge and create a Type Ia supernova in 700-million years time. ESO/L. Calçada

White dwarf merger is set to prove supernova theory

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

Laser helps find supermassive black hole in a small galaxy

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)

From black holes to dark matter, an astrophysicist explains

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…

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