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.
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Articles on Galaxies
Displaying 1 - 20 of 61 articles
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.
These results might lead us to revise our understanding of how galaxies stop forming their stars.
A new method suggests we should aim to detect dark matter haloes by tracing galactic gas.
COVID-19 may have messed up school and shut down a lot of entertainment venues. But you can still brighten things up by doing a little stargazing at night, an astronomer says.
Dark energy is probably a sea of constant energy in empty space itself, according to new research.
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.
Like a cosmic butterfly in the sky, radio galaxy PKS 2014-55 was observed by CSIRO researchers with the Australian SKA Pathfinder telescope.
Thirty years ago the Hubble Space Telescope began snapping photos of distant stars, providing a time machine that has taken astronomers back to when the universe was less than a billion years old.
New research using the Hubble Space Telescope reveals that galaxies may be forming at faster rates than previously believed.
This observation means astronomers can now develop and test theories that explain how high-mass stars gain their mass.
New research shows how chemical elements mix in the universe. Without this process, you wouldn't be here.
Will we have to rewrite Einstein's theory of gravity? The DESI experiment could find out.
New research shows the supermassive black hole at the centre of the Milky Way spat out an enormous beam of radiation 3.5 million years ago
Maps of the long filaments of gas that hold the universe together may one day help us trace and unveil 'dark matter'.
The rate of the universe's expansion is in dispute. But a new kind of measurement offers hope.
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.
The diameter of the Milky Way is a billion billion kilometres.
The Milky Way’s disc of stars becomes increasingly warped and twisted the further away they are from the galaxy’s centre.
New research suggests we may be able to forget about dark matter if we tweak the laws of gravity according to imaginary bubbles in space.
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Top contributors
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Honorary Fellow of the University of Melbourne and Senior Curator (Astronomy), Museums Victoria
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Professor of Astrophysics and Royal Society University Research Fellow, University of Hertfordshire
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Post-doctoral researcher in Astrophysics, University of the Western Cape
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Associate professor in astronomy, Monash University
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Senior Lecturer of Astrophysics, Liverpool John Moores University
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Professor, The University of Queensland
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Senior Lecturer in Physics, University of Hull
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Senior research scientist, CSIRO
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SKA Postdoc in Observational Cosmology, University of the Western Cape
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PhD Candidate, The University of Queensland
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Professor, School of Science, Western Sydney University
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Professor, University of Sydney
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Professor of Astrophysics, University of Sydney
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Head of Education and Public Outreach LSST, Australian Astronomical Observatory
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Professor (Astrophysics), University of Southern Queensland
