Will the universe keep existing forever? An astrophysicist explains how scientists aren’t entirely sure, but they can make predictions.
Articles on Galaxy
Displaying 1 - 20 of 43 articles
An astronomer and ‘black hole historian’ explains how the parts of the universe black holes grow in might influence how quickly they become bright, supermassive objects.
Like a cosmic butterfly in the sky, radio galaxy PKS 2014-55 was observed by CSIRO researchers with the Australian SKA Pathfinder telescope.
New research does away with dark matter by putting ‘entropy’, a measure of disorder, at the heart of the universe.
When you look at the squiggly lines on Joy Division’s famous album cover, you’re seeing a record of lightning in outer space.
Astronomers have suspected them for ages –now a team as finally spotted a ‘fountain’ in a galaxy far, far away.
There are probably more than a million planets in the universe for every single grain of sand on Earth. That’s a lot of planets. My guess is that there probably is life elsewhere in the Universe.
Astronomers traced a single star as it passed close to the black hole at the centre of our galaxy, and detected the telltale signature of Einstein’s gravity in action.
A giant detector at the South Pole has observed a neutrino from a black hole in a distant galaxy for the first time.
Exactly 99 years after Einstein’s theory of general relativity was proven right in our own solar system, scientists show that it also holds true for entire galaxies.
Astronomers have indirectly spotted some of the first stars in the universe by making their most distant detection of oxygen in a galaxy that existed just 500m years after the Big Bang.
Astronomers are gathering an exponentially greater amount of data every day – so much that it will take years to uncover all the hidden signals buried in the archives.
As galaxies get older they get rounder, and fall victim to the middle-aged spread that catches many of us humans here on Earth.
Black holes may come in many sizes, but there’s still a gap in the middle. The hunt is on to solve the mystery of where are the intermediate size black holes.
Massive, far distant galaxies contain 100 times more gas than we thought possible.
Star Trek: Discovery explores our corner of the block – just a fraction of the galaxy. Some stars are better candidates for intelligent alien life, and it may not be anything like we imagine.
The recipe book for galaxy formation may need to be rewritten after the discovery of a massive galaxy that stopped making new stars early in the Universe’s history.
Astronomers are surprised by what they’re finding out about galaxies that formed in the early days of our universe, now that sensitive telescopes allow direct observation, not the inference of old.
So where did all the dark matter come from?
Understanding how the billions of stars in our galaxy formed and evolved is the subject of a huge galactic archaeology project.
Top contributors
-
Professor of Astrophysics, University of Sydney
-
Senior Curator (Astronomy), Museums Victoria Research Institute; The University of Melbourne
-
Professor of Astrophysics, The University of Queensland
-
Pro Vice-Chancellor Flagship Initiatives, Swinburne University of Technology
-
Professor and Director of the Centre of Excellence for Data Science, AI and Modelling, University of Hull
-
Associate Professor in Astronomy, Monash University
-
Professor (Astrophysics), University of Southern Queensland
-
Associate Professor, The University of Queensland
-
PhD student in observational astronomy, Monash University
-
Postdoctoral research associate, The University of Western Australia
-
Assistant Professor of Physics, University of Maryland, Baltimore County
-
Astronomer Emeritus, Space Telescope Science Institute and Professor of Practice of Astronomy & Astrophysics, Penn State
-
Professor, National Astronomical Observatories, Chinese Academy of Sciences
-
Senior lecturer, Macquarie University
-
Astronomer-at-Large, Department of Industry, Science, Energy and Resources, Australian Astronomical Observatory