Visible light image of the radio galaxy Hercules A obtained by the Hubble Space Telescope superposed with a radio image taken by the Very Large Array of radio telescopes in New Mexico, USA.
Merging supermassive black holes would emit gravitational waves, allowing scientists to detect them.
Pluto’s ghoulish cousin, 2015 TG387, lurks in the distant reaches of our own Solar System.
Illustration by Roberto Molar Candanosa and Scott Sheppard, courtesy of Carnegie Institution for Science.
Whether you call it Planet X or Planet Nine, talk of another planet lurking in our Solar system won't go away. So what does the discovery of a new object – nicknamed "The Goblin" – add to the debate?
Enjoying the planets lined up in a row.
The five planets visible to the naked eye since ancient times are putting on a dazzling display this month, in a night-sky dance along with the Moon.
Central antennas of the Australia Square Kilometre Array Pathfinder.
We still don't know what causes these mysterious Fast Radio Bursts deep in the universe, but we've detected a whole new batch of them.
The ALMA telescope has seen tantalising hints of a violent event.
ESO/B. Tafreshi/TWAN (twanight.org)
The 'oldest known nova' (a star explosion) in the sky was actually not a nova, astronomers show.
An artist’s impression of the strong magnetic field neutron star in Swift J0243.6+6124 launching a jet.
ICRAR/University of Amsterdam
Astronomers found something not predicted by current theory when they took a closer look at the emissions from a neutron star with a very strong magnetic field.
Captured: approximately 15,000 galaxies (12,000 of which are star-forming) widely distributed in time and space.
NASA, ESA, P. Oesch (University of Geneva), and M. Montes (University of New South Wales)
Astronomers are voting to rename one of the laws of physics. The voting may have far-reaching effects leading to renaming of other laws and giving 'forgotten' scientists due credit.
The other galaxies are there, but they are hiding a very long way away.
We are in the Milky Way. If you travelled on an extremely fast spaceship for more than two million years, you would reach our neighbour, the Andromeda galaxy. All other galaxies are even further away.
HIRAX prototype dishes at Hartebeesthoek Astronomy Observatory near Johannesburg.
By sharing a location with the SKA, HIRAX will be able to conduct science in “radio-clear” skies across its wide frequency range.
An artist’s depiction of a pair of neutron stars colliding.
To better detect gravitational waves, we need to build the quietest and most isolated thing on Earth. And make sure we don't drop those 40kg mirrors.
Venus shines bright in the sky above Victoria.
Flickr/Indigo Skies Photography
The planets we can see in the sky were known to the ancient Greeks as 'wandering stars'. But they appeared much earlier in the stories and traditions of Australia's Indigenous people.
A podcast all about nothing. From the importance of doing nothing to the ill-effects of time spent in solitary confinement and what nothing means in space.
It's all about the strong gravitational field of the black hole.
The blood moon myths are many and varied, but, at the end of the day, it's just an eclipse.
The Blood Moon from January 31, 2018. Our second chance to see an eclipsed Moon this year is coming up on July 28.
All five five planets visible to the naked-eye are on show in the night skies over Australia, and a Blood Moon on the way too.
A detector buried under more than a mile of ice in Antarctica has detected a high-energy subatomic neutrino and traced it to its origin, a blazar – a gargantuan black hole more than a billion times more massive than the sun.
School children at the site of the KAT-7 radio telescope in Carnarvon, South Africa.
Astronomy is accessible to anyone with a view of the sky.
What could a ‘relativistic camera’ capture on the way to Alpha Centauri?
An astronomer suggests an idea to piggyback on the ambitious Breakthrough Starshot project that aims to send nano spacecraft to Alpha Centauri at a major fraction of the speed of light.
US F/A-18 footage of a UFO (circled in red).
Creative Commons Attribution-Share Alike 4.0 International license.
About 5 percent of all UFO sightings cannot be easily explained by weather or human technology. A physicist argues that there's compelling evidence to justify serious scientific study and that the skeptics should step aside – for the sake of humanity.
The Northern Hemisphere gets its biggest dose of daylight.
Takmeng Wong and the CERES Science Team at NASA Langley Research Center
The tilt of Earth's axis as it orbits the sun results in the seasonal changes.