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Articles on Galaxies
Displaying 21 - 40 of 137 articles
The James Webb Space Telescope is celebrating three years from its launch. Its discoveries have already changed our understanding of the early universe.
A new effort to map the rumblings in spacetime caused by enormous black hole collisions paints a surprisingly loud and lopsided picture of the universe.
In 1924, astronomer Edwin Hubble realised two objects were too distant to be inside our galaxy.
Cosmology could be transformed by a new wave of telescopes – both on the ground and in space.
We may never know – and the universe may not even have an edge. But here’s what we do know.
Some of the earliest galaxies found with JWST are also the brightest. That’s a problem for our ideas about the universe.
The Hubble tension has been described as a “crisis” for cosmology. Can it be resolved?
A new series delves into the big questions surrounding the nature of our universe.
Today we’re able to finally reveal the first detailed picture of the gas shroud around a galaxy, extending 100,000 light years out into ‘empty’ space.
The first International Astronomical Union General Assembly was held just over 100 years ago, in Rome, Italy.
One hundred years ago, one star changed our view of the universe, proving that the Andromeda “nebula” was a galaxy like our Milky Way.
2024 marks 25 years since NASA’s Chandra X-ray Observatory started detecting X-rays from energetic astronomical events.
When astronomers focused on the galaxy NGC 4383, they didn’t expect the data to be so spectacular. This is the first detailed map of gas flowing from this galaxy as stars burst within.
An attempt to study gas in one galaxy with the MeerKAT radio telescope detected 49 other galaxies instead.
The discovery raises big questions about widely accepted models of galaxy formation.
People have been looking up at the stars for thousands of years. Here’s where to start if you want to learn more about the night sky – from spotting easy-to-find constellations to using the best apps.
Do all big black holes in very massive galaxies emit radio waves? We used the latest radio telescopes to find out.
New ASKAP images reveal a giant hydrogen ring around the spiral galaxy NGC 4632.
The universe used to be filled with a hydrogen fog, before early stars and galaxies burned through the haze. Astronomers are studying galaxies that tell them about this period in the early universe.
Top contributors
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Associate Professor in Astronomy, Monash University
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Professor of Astrophysics and Royal Society University Research Fellow, University of Hertfordshire
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Senior Curator (Astronomy), Museums Victoria Research Institute; The University of Melbourne
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Post-doctoral researcher in Astrophysics, University of the Western Cape
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Honorary Fellow, Space and Astronomy, CSIRO; Western Sydney University
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Senior research scientist, CSIRO
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Associate Dean of Innovation and Engagement, Swinburne University of Technology
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University Distinguished Professor of Astronomy, University of Arizona
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Professor of Astronomy, Liverpool John Moores University
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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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Professor (Astrophysics), University of Southern Queensland
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ARC DECRA Fellow in Astronomy, University of Sydney
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Professor, The University of Queensland
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ARC DECRA Fellow in Astronomy, University of Sydney
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SKA Postdoc in Observational Cosmology, University of the Western Cape