The universe is home to a dizzying number of stars and planets. But the vast bulk of the universe is thought to be invisible dark matter.
Why do astronomers believe there's dark matter when it cannot be directly detected? Let's look at the evidence, and see what dark matter's presence means for our universe.
Reserve Bank Deputy Governor Guy Debelle, Governor Philip Lowe, and assistant governors Luci Ellis and Michele Bullock at Friday’s parliamentary hearing in Canberra.
The Reserve Bank's best case scenario is that its forecasts are wrong.
Sacked: former UK defence secretary Gavin Williamson was dismissed following the alleged leak of sensitive government information.
Politicians have been leaking secrets to journalists as long as newspapers have existed. But it's getting more difficult thanks to surveillance technology.
The Seine and Notre Dame, physically and spiritually the heart of Paris.
Iakov Kalinin via Shutterstock
From coronations to Revolution to reconciliation, Notre Dame has witnessed nearly 900 years of French history.
Cavendish bananas may not be around for much longer.
Scientists are in a race to genetically engineer a new plant resistant to a devastating disease that is threatening to wipe out the banana.
Fisher unloads his catch.
The advent of steam transformed the fishing industry after 500 years of trawling by sail. But overfishing and declining stocks put the British industry at loggerheads with that of other nations.
Long read: How nature is fighting our attempts to use biohacking to live forever.
WeChat is an all-in-one social media platform that combines services such as those offered by WhatsApp, Facebook, Uber and Apple Pay.
Chinese-language social media in Australia are increasingly a focus for local political parties.
The Tianshan mountains frame Sayram Lake in the Bortala Prefecture in Xinjiang, China.
Setting the scene for ancient Silk Road trading and now China's Belt and Road initiative, the Tianshan has changed humanity. Geological evidence shows us how this incredible mountain range formed.
Many farmers cultivating organic crops believe that genetically modified crops pose threats to human health.
Is gene editing compatible with organic farming? A scholar explains the differences between old genetic engineering and CRISPR methods, and why the latter is similar to tradition plant breeding.
A Green Bay Packers fan wears a cheese hat reading ‘NFL Owner’ – a nod to the fans’ public ownership of the franchise.
Many Americans seem to like seeing communist ideas in action, but have a visceral reaction to the word ‘communism.’ Might it be time to refresh an old ideology with a new set of terms?
Can Walmart go green while maintaining its commitment to low prices?
AP Photo/Tom Uhlman
Two business professors spent five years studying Walmart's ambition project to bring sustainability to its millions of budget-conscious customers – a plan that began with the birth of a granddaughter.
A new Parramatta is emerging out of the rubble of history.
Artist's impression of the new North Parramatta development/URBANGROWTH NSW/AAP
Sydney's Parramatta is developing fast, building over a rich archaeological history. Finding ways to retain it can help visitors and residents feel a sense of physical connection with those who came before.
Australia’s deep history was uncovered at Lake Mungo.
On the golden jubilee of the discovery of Mungo Lady's 40,000-year-old remains, we can reflect on Aboriginal Australia's vast history, which predates the arrival of Homo sapiens in both Europe and America.
Life in the human herd is complex, and we are unavoidably inter-dependent when it comes to our health. Population health science looks at the things that cause ill-health in the first place.
New findings show what the public really thinks about how we prioritise treatments at the end of people's lives.
The Homeward Bound initiative works with women in science to enhance their opportunity to take up leadership roles globally.
This year 77 women took part in the largest all-female expedition to Antarctica as part of a leadership training program. Rough weather enroute put group decision-making skills to the test.
Disappearing from a high street near you.
A long read on the decimation of British jobcentres – and why it puts the rollout of Universal Credit at risk.
Fact or fiction? Either way, an alien still seems menacing.
Cindy Zhi/The Conversation
Stephen Hawking raised the public profile of grand science, and speculated about the future of artificial intelligence, as well as contacting aliens. Does science mix easily with science fiction?
Facebook’s actions – or inactions – facilitated breaches of privacy and human rights associated with democratic governance.
Human rights abuses might be embedded in the business model that has evolved for social media companies in their second decade.