The Hubble Constant is constantly perplexing
Astronomers suggest an entirely different way of measuring it.
Astronomers looking at ghostly images of the light from distant quasars have deepened one of the biggest mysteries in...
Beware solar storms, scientists warn
They could be more regular than thought.
Solar blow-ups like the Carrington Event, a 1859 solar storm long believed to be the largest in the history of modern...
Gas emissions discovered from interstellar comet
This will help scientists work out what it’s made of.
Astronomers have detected gas emissions from a comet streaking into our Solar System from interstellar space. The co...
Milky Way exploded three million years ago
The discovery dramatically alters our understanding of our galaxy.
A titanic, expanding beam of energy sprang from close to the supermassive black hole in the centre of the Milky Way j...
The final chapter for GW170817 captured
International team painstakingly constructs the afterglow.
The detection of what we now know as GW170817 in October 2017 was an historic moment for at least two reasons.It was ...
The hunt for a 12-billion-year-old signal
Astronomers nudging closer thanks to data from Australia.
Astronomers believe they are closing in on a signal that has been travelling across the Universe for 12 billion years...
Colours come, colours go
NASA satellite spots a mystery that’s gone in a flash.
The pops of bright blue and green in this image of the Fireworks galaxy NGC 6946 show the locations of extremely brig...
Big Red Ball gives clues to the sun’s wind
Insight into the largest magnetic field in the solar system.
A three-metre diameter artificial sun has been used to model the massive and spiralling magnetic field that emanates ...
Two FRBs nailed in a week
Australian and US astronomers took different approaches.
In less than a week as June became July, two teams of radio astronomers – one in Australia, the other in the US – ann...
We are stardust. And Big Bang dust.
Neutron star collisions are essential to our origin story.
When, in 2017, the LIGO experiment detected gravitational waves from two neutron stars colliding, it sent electromagn...
Closing in on a fast radio burst
A ‘new killer app’ helped with an important breakthrough.
Astronomers have spent the past dozen years hunting for fast radio bursts (FRBs) – flashes of radio waves that come f...
A black hole, a disc and an equator
Simulations confirm predictions made half a century ago.
In 1975, Nobel Prize-winning physicist John Bardeen and astrophysicist Jacobus Petterson proposed that the inner-most...