A dark stream sheds new light on the life of galaxies

“Galactic cannibalism is how our universe grows” An international team of scientists led by a University of Sydney astrophysicist has discovered evidence the Andromeda galaxy is a cannibal growing through…
A dark stream sheds new light on the life of galaxies

Alien megastructures? Cosmic thumbprint? What’s behind a James Webb telescope photo that had even astronomers stumped

In July, a puzzling new image of a distant extreme star system surrounded by surreal concentric geometric rungs had even astronomers scratching their heads. The picture, which looks like a…
Alien megastructures? Cosmic thumbprint? What’s behind a James Webb telescope photo that had even astronomers stumped

Milky Way’s graveyard of dead stars found

A study creates the first map of our galaxy’s ancient dead stars In the first map of the ‘galactic underworld’, a study from the University of Sydney has revealed a…
Milky Way’s graveyard of dead stars found

Measuring reliable stellar abundances towards crowded regions using MUSE

With the rapid development of stellar spectroscopy in the past decade, many stellar spectroscopic surveys, for example LAMOST, GALAH and APOGEE, combined with the astrometric information of Gaia have played…
Measuring reliable stellar abundances towards crowded regions using MUSE

Australian-based astronomers to take a deep dive into the cosmos with time awarded on one of ESO’s most powerful instruments

ESO’s Very Large Telescope (VLT), which houses the Multi Unit Spectroscopic Explorer (MUSE). Two teams of Australian-based astronomers have recently each been awarded substantial amounts of observing time on this…
Australian-based astronomers to take a deep dive into the cosmos with time awarded on one of ESO’s most powerful instruments

This newly discovered neutron star might light the way for a whole new class of stellar object

The discovery of a neutron star emitting unusual radio signals is rewriting our understanding of these unique star systems. My colleagues and I (the MeerTRAP team) made the discovery when observing the…
This newly discovered neutron star might light the way for a whole new class of stellar object

News

Astronomers find regular rhythms among pulsating stars

Through the noise, young stars reveal their inner workings An Australian-led team has solved the mystery of how some rapidly rotating young stars pulsate. Delta Scuti stars can now be studied in more detail thanks to the work of Professor Tim Bedding and colleagues. By listening to the beating hearts

Galaxy’s arms elbow stars into our neighbourhood

Many stars that now live near the Sun were born somewhere else in the Galaxy. Astronomers have just worked out how these migrants reached their new homes and what set them travelling – important details of our Galaxy’s story.

An explosion at the centre of our Galaxy

A new study led by SIfA professor Joss Bland-Hawthorn shows evidence that a huge explosion occurred at the centre of our Galaxy.  This explosion was so powerful that it could only have come from one thing: the supermassive black hole today lying dormant in the middle of our galaxy, Sagittarius A*.

The Cannibal Next Door

SIfA Professor Geraint Lewis and his international team,  including with SIfA PhD students Zhen Wen, have unravelled the cannibalistic past of the Andromeda galaxy. This study, published in Nature, analysed globular cluster data from the Pan-Andromeda Archaeological Survey (PAndAS) to reconstruct the times when Andromeda devoured small galaxies to grow its

Tiny star behaves like both a sun and a planet

SIfA PhD candidate Andrew Zic A well-known star is behaving somewhat like a planet, a SIfA-led team has found. PhD candidate Andrew Zic and his collaborators have discovered pulsed radio emission from UV Ceti, a dwarf star with a mass just a tenth of the Sun’s. The emission has a

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