A recent study shows that the Earth's water could come directly from the oxygen and hydrogen present in the rocks that formed it, and not from a late supply by asteroids.
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Articles on Universe
Displaying 1 - 20 of 72 articles
Thanks to the discovery of five twinkling galaxies in a rare alignment, astronomers have been able to calculate — for the first time — the properties and geometry of an invisible gas cloud in space.
Some of the baby radio galaxies found may not be 'babies' at all. Rather, they may be 'angsty teens', rapidly growing into adults much faster than researchers had anticipated.
Field theory describes the universe as energy flowing along unending lines. With this perspective, it is possible to define a new fundamental building block of matter.
Cosmologists had only been able to find half the matter that should exist in the universe. With the discovery of a new astronomical phenomenon and new telescopes, researchers just found the rest.
The term 'Big Bang' might make you think of a massive explosion. Put the thought out of your head. Rather than an explosion, it was the start of everything in the universe.
A study has suggested that the universe is curved like a sphere rather than flat, which may unleash a major crisis in cosmology.
Dark sky sites can inspire new generations of stargazers, but a better long-term solution would be connecting people with the night sky where they live.
Maps of the long filaments of gas that hold the universe together may one day help us trace and unveil 'dark matter'.
In an age when women were rarely allowed in observatories, Margaret Burbidge changed how we saw the stars.
When you look at the squiggly lines on Joy Division's famous album cover, you're seeing a record of lightning in outer space.
Gravity exists because the universe is full of 'stuff' – here's how it came to be.
The diameter of the Milky Way is a billion billion kilometres.
At the end of the day, the problem is that no-one on Earth wants nuclear waste stored near them, and it's not safe or cost-effective to blast it into space.
Long ago in the distant past, our entire Universe was microscopic – just like an atom – and obeyed completely different rules of cause and effect.
Our brain cells do look a lot like a map of the universe – but that doesn't mean they're the same thing.
Astronomers are voting to rename one of the laws of physics. The voting may have far-reaching effects leading to renaming of other laws and giving 'forgotten' scientists due credit.
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A podcast all about nothing. From the importance of doing nothing to the ill-effects of time spent in solitary confinement and what nothing means in space.
Nearly 50 years since the first man walked on the moon, our morals are still stranded on Earth.
Pretty much as soon as we understood what galaxies were, we realised they are all moving away from each other. And the ones that are further away are moving faster. In short, the universe is expanding.
Top contributors
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Professor of Astrophysics, University of Sydney
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Professor, The University of Queensland
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Alan Duffy is a Friend of The Conversation.
Associate Professor and Research Fellow, Swinburne University of Technology
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Cosmologist, University of Tasmania
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Associate professor in astronomy, Monash University
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Emeritus Professor, ARC Centre of Excellence for Gravitational Wave Discovery, OzGrav, University of Western Australia
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Director & Distinguished Professor, Centre for Astrophysics & Supercomputing, Swinburne University of Technology
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John Curtin Distinguished Professor (Radio Astronomy), Curtin University
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Honorary Fellow of the University of Melbourne and Senior Curator (Astronomy), Museums Victoria
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ARC Future Fellow / Senior Lecturer, Macquarie University
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Astronomer, CSIRO
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Senior Lecturer of Astrophysics, Liverpool John Moores University
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Professor of Astronomy & Astrophysics, University of California, Santa Cruz
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Associate Professor of Astrophysics, Curtin University
