In the beginning, the Universe expanded very, very fast.
What caused the Big Bang is still a mystery. And that's just one of the many unanswered questions, in spite of everything we do know about the birth of the Universe.
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.
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.
ASKAP at night.
It used to take weeks to find any of these mysterious signals from deep in space but when the new telescope started looking it found one within days. Then another.
ESO provides new ways to access the southern sky for Australian astronomy.
ESO/José Francisco Salgado
Australia's new partnership with the European Southern Observatory will give our astronomers access to much bigger telescopes.
Artist’s impression of ZF-COSMOS-20115, a galaxy that stopped making new stars and rapidly turned into a compact red galaxy.
The recipe book for galaxy formation may need to be rewritten after the discovery of a massive galaxy that stopped making new stars early in the Universe's history.
Artist’s impression of a quasar shining through a galaxy’s ‘super halo’ of hydrogen gas.
A. Angelich (NRAO/AUI/NSF)
Astronomers are surprised by what they're finding out about galaxies that formed in the early days of our universe, now that sensitive telescopes allow direct observation, not the inference of old.
Most modern spiral galaxies, such as NGC 1300, are thought to have loads of dark matter in their outer regions.
NASA, ESA, and The Hubble Heritage Team STScI/AURA)
So where did all the dark matter come from?
The Australian Square Kilometre Array Pathfinder uses several telescopes to survey the sky.
After months of running in test-mode, the Australian Square Kilometre Array Pathfinder telescope is now gathering data at an incredible rate to give us a new look at how our universe works.
The Andromeda Galaxy, just part of a finely tuned universe.
Flickr/NASA, ESA, J. Dalcanton, B.F. Williams, and L.C. Johnson (University of Washington), the PHAT team, and R. Gendler
A new book explores some of the big questions of why the universe exists and why it seems fine-tuned for life.
Leibniz’s 'great question' remains a central question in philosophy and science today.
The expanding universe.
New research out this month has led to speculation that the acceleration of the expanding universe might not be real after all. So what's really going on?
Truth is out there.
Sonification is a technique for converting data into sound. It could transform the study of distant worlds.
Light from the universe’s first galaxies destroyed the hydrogen atoms that formed during the Big Bang.
NASA, ESA, R. Ellis (Caltech), and the UDF 2012 Team
A new telescope aims to figure out what became of the universe's original atoms once the first stars began to shine.
A small section from the ZFOURGE survey, which contains thousands of galaxies spanning billions of years.
Hundreds of images of thousands of galaxies have given astronomers one of the most detailed galaxy studies ever compiled.
An illustration showing the merger of two black holes and the gravitational waves that ripple outward.
The observation of gravitational waves from a second black hole merger implies there are many more black holes in the universe than scientists had previously anticipated.
CSIRO’s Compact Array telescope under the Milky Way.
Astronomers think they may have found evidence within our galaxy of some of the missing matter thought to make up our universe.
Like a cosmic roulette wheel, we exist because of a very lucky combination of factors.
If some of the laws of physics were only infinitesimally different, we would simply not exist. It almost looks like the universe itself was built for life. But how can that be?
A colour image of G63349, one of the galaxies in the survey, created using near-infrared (VISTA telescope) and optical (Sloan telescope) data collated by the GAMA survey. (The bright green object is a nearby star.)
Our universe's most exciting days are well behind us, with new research showing the universe is now slowly but surely dying.
What secrets will space reveal?
Why the Breakthrough Listen project is a step in the right direction in our hunt for life beyond Earth.