Astronomers have taken a forensic approach to study the stellar halo of a galaxy to reveal hidden secrets on how such galaxies were formed.
Articles on Galaxy
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Astronomers are making new discoveries about our galaxy thanks to a more detailed map of the Milky Way.
Galaxies are supposed to be the place where new stars are formed. So what causes some to stop this stellar production line?
The find by citizen scientists of at least 40 galaxies in a cluster more than a billion light years away is the astronomical equivalent of finding a needle in a haystack.
A new study suggests that mysterious high energy cosmic rays might originate from the supermassive black hole at the centre of our galaxy.
Jupiter had a big influence on how our solar system’s planets formed. New research – led by a high school student – tried to nail down how rare Jupiter analogs really are in other planetary systems.
A new model suggests that elliptical galaxies are more likely to be habitable than spiral galaxies like our own. Does that mean we’re a freak event and elsewhere is teeming with life?
Why the Breakthrough Listen project is a step in the right direction in our hunt for life beyond Earth.
Astronomers from around the world identify their favourite images sent back to Earth by the Hubble Space Telescope.
What happens to a galaxy when it runs out of the stuff needed to forge new stars?
Scientists know so much about dark matter apart from what it is exactly. But are they getting any closer?
The best observations yet of a mysterious gas cloud that was heading for the black hole at the hear of our Milky Way reveal it may have more stellar origins.
A supermassive black hole has been found in an ultracompact dwarf galaxy – the smallest galaxy known to contain such a massive black hole. This finding, published today in Nature, suggests that supermassive…
The Large Magellanic Cloud galaxy completes a rotation every 250 million years, astronomers have found. Using NASA’s Hubble…
The speed at which spiral galaxies spin determine whether they are fat and bulging or whether they are shaped like flat discs…
According to cosmologists, galaxies are joined together by filaments, quite literally. These filaments form the cosmic web and are made of mostly dark matter, many stars and some gas. Observing these filaments…
Galaxies located in groups may be running out of gas, according to a new international study led by Swinburne University…
Being spiral in shape, our Galaxy is already in permanent rotational motion. But astronomers have found that the Milky Way…
Galaxies may look pretty and delicate, with their swirls of stars of many colours - but don’t be fooled. At the heart of every galaxy lies a supermassive black hole, including in our own Milky Way. Black…
Amateur astronomers in Russia made a discovery last week any professional would envy - it seems they may have identified the remnants of the ill-fated Soviet Mars 3 lander, 30 years after it lost contact…
Top contributors
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Professor of Astrophysics, University of Sydney
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Senior Curator (Astronomy), Museums Victoria Research Institute; The University of Melbourne
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Professor of Astrophysics, The University of Queensland
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Pro Vice-Chancellor Flagship Initiatives, Swinburne University of Technology
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Professor and Director of the Centre of Excellence for Data Science, AI and Modelling, University of Hull
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Associate Professor in Astronomy, Monash University
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Professor (Astrophysics), University of Southern Queensland
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Associate Professor, The University of Queensland
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PhD student in observational astronomy, Monash University
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Postdoctoral research associate, The University of Western Australia
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Assistant Professor of Physics, University of Maryland, Baltimore County
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Astronomer Emeritus, Space Telescope Science Institute and Professor of Practice of Astronomy & Astrophysics, Penn State
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Professor, National Astronomical Observatories, Chinese Academy of Sciences
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Senior lecturer, Macquarie University
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Astronomer-at-Large, Department of Industry, Science, Energy and Resources, Australian Astronomical Observatory