Image showing where scientists believe dark matter resides in the galaxy cluster Abell 520
– near the hot gas in the middle, coloured green.
Chandra X-ray Observatory Center
Controversial new study challenges contemporary thinking about what the universe is made of.
Andy Rain/ EPA
Hawking proved that the Big Bang was physically possible.
Simulated universe: EAGLE collaboration, J Schaye et al 2015.
Is dark energy just an illusion, as is often suggested? To resolve the dilemma, interpreting the basic principles of general relativity in a complex Universe may need a rethink.
Gravity of a white dwarf star warps space and bends the light of a distant star behind it.
NASA, ESA, and A. Feild (STScI
Astronomers report the first ever measurement of light bending around a star other than our own.
Artist’s conception of two merging black holes, spinning in a nonaligned fashion.
LIGO/Caltech/MIT/Sonoma State (Aurore Simonnet)
These ripples in the very fabric of the universe were hypothesized by Einstein a century ago. Now scientists have detected them for the third time in a year and a half – ushering in a new era in astrophysics.
The discovery of the year was the first detection of gravitational waves.
Colliding black holes to exploding spacecraft, 2016 was an incredible year for astrophysics.
Hi Juno, welcome to Jupiter.
From the discovery of gravitational waves, to the Pokémon Go phenomenon to the Census debacle, it's been a big year in science and technology.
Einstein’s theories are still not taught in school.
Einstein's theories of relativity underpin our understanding of the universe, yet they're not taught in high school. How can we change that?
Gravitational waves are produced by some of the most extreme events in the universe.
The OzGRav Centre of Excellence for Gravitational Wave Discovery will enable Australian researchers to be at the forefront of gravitational wave astronomy.
There are two broad ways to measure the expansion of the universe. One is based on the cosmic microwave background, shown here, along with our own galaxy viewed in microwave wavelengths.
ESA, HFI & LFI consortia (2010)
The universe is expanding faster than expected, but we don't know what's driving it. Here are a few of the possible explanations, from dark energy to a modification of general relativity.
An artist’s impression of the galaxies found in the ‘Zone of Avoidance’ behind our Milky Way.
International Centre for Radio Astronomy Research
Something mysterious is pulling our Milky Way through space at a much faster rate than expected. So what could it be?
There's a good reason you should care about the discovery of gravitational waves, even if you don't understand the science.
A team effort: Dr David Reitze, of the LIGO Laboratory at Caltech, shows the merging of two black holes that led to the detection of gravitational waves.
The discovery of gravitational waves involved a team of more than 1,000 scientists from across the globe, including Australia. So how does such an international collaboration work?
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.
Oh hey, I heard ripples in space and time, generated as two black holes merged. Call me back.
Here's a LIGO insider's description of how he got the news of a phenomenon that had first been theorized 100 years ago.
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.
The 4km long arms of the LIGO experiment at Hanford.
LIGO lab: www.ligo.caltech.edu
A glimpse inside a truly extraordinary experiment.
2015 saw us complete our exploration of all nine planets (including dwarf planet Pluto) in our solar system.
2015 was a year where we expanded our view of the universe, embraced new technologies and got a hint of the profound changes to come.
© 2014 Lucasfilm Ltd. & TM
Four decades later, I find myself surveying 13 billion years of cosmic history and mapping events that really did happen a long time ago in galaxies far, far away.
Albert Einstein wrestled with unifying gravity with electromagnetism and quantum mechanics until his dying days.
Oren Jack Turner/Wikimedia Commons
After the triumph of general relativity, Albert Einstein spent the rest of his life chasing a unified theory, which eluded him right up until the end.