Scientists knew the mystery signals were close by the Parkes radio telescope: but what was the source?
Astronomers used to probing the universe always knew that strange signals detected by the Parkes radio telescope were coming from somewhere closer to home. But finding the source was the tricky bit.
Observing on-site at the University of Hawaii 2.2-meter telescope on Mauna Kea, Hawaii in 2008.
Astronomers aren't mere stargazers these days. One researcher explains the ins and outs of how they collect data from far-off galaxies and what they do with it back at the office.
The galaxies NGC 4038 and NGC 4039, locked in a destructive embrace.
After a slow start, Hubble's ultraviolet vision changed the face of astronomy.
Astronomers from around the world identify their favourite images sent back to Earth by the Hubble Space Telescope.
Wreathed in dust, the death of a supergiant star.
An unremarkable speck in the sky was transformed into an unique astronomical object – and Hubble was there to capture it.
The Hubble Extreme Deep Field, looking back towards the birth of the universe.
Hubble's Deep Field images are the next best thing to a time machine, revealing details of galaxies from the early universe, 13 billion years ago.
How do we think about something we can’t see and don’t experience in our everyday lives, but seems to be pushing our universe apart ever faster?
NASA, ESA, G. Illingworth, D. Magee, and P. Oesch (University of California, Santa Cruz), R. Bouwens (Leiden University), and the HUDF09 Team
Einstein's theory of gravity says dark energy must be out there, accelerating the expansion of our universe. But what is it and how can we try to figure out more about it?
Hubble in orbit.
The Hubble Space Telescope launched 25 years ago in 1990. But O'Dell started on the project in 1972, garnering support for the world's first telescope free of Earth's atmosphere's blurring effects.
The Hubble Space Telescope hovers at the boundary of Earth and space.
Twenty-five years on and the Hubble Space Telescope is still taking some amazing images. But there have been a few glitches over the years, right from day one.
Looking for dark matter in the galaxy collisions such as in Abell 2744, dubbed Pandora’s Cluster.
X-ray: NASA/CXC/ITA/INAF/J.Merten et al, Lensing: NASA/STScI; NAOJ/Subaru; ESO/VLT, Optical: NASA/STScI/R.Dupke
Scientists know so much about dark matter apart from what it is exactly. But are they getting any closer?
Pale Blue Dot – Earth, imaged by Voyager 1 from 6 billion kilometres away.
From a big blue marble to a tiny dot in space -- reflections on our images of Earth.
A lucky gap in the clouds.
A solar eclipse is something to behold, but they're rare and useful events for testing scientific theories too.
As visible from Europe (weather permitting).
Solar eclipses may not be a once in a lifetime event, but being able to see them from home is rare enough.
Something new discovered near our Milky Way.
Several dwarf galaxies have been discovered close to our own Milky Way and are adding to our understanding of how galaxies form. But why haven't astronomers seen them before?
As the Sun matures into a Red Giant, the oceans will boil and Earth will become uninhabitable.
In a few billion years, the sun will become a red giant so large that it will engulf our planet. But the Earth will become uninhabitable much sooner than that. After about a billion years the sun will…
Artist’s concept of Giant Magellan Telescope once completed, with its seven mirrors.
Giant Magellan Telescope - GMTO Corporation
As an astronomer, I get a lot of requests for help. “I’d like to buy a telescope,” the conversation usually goes. “Can you give me some tips on what to look for?” Sadly, there’s little advice I can offer…
Artist’s impression of two white dwarf stars destined to merge and create a Type Ia supernova in 700-million years time.
Two white dwarfs found orbiting each other at the centre of a planetary nebula are now known to have enough mass that they will eventually trigger a special kind of supernova, according to research published…
A bright fireball over the Atacama Large Millimeter/submillimeter Array, ALMA, in Chile, marks the fiery death of a small grain of space debris, high in the atmosphere.
Meteors have been seen since people first looked at the night sky. They are comprised of small pieces of debris, typically no larger than a grain of dust or sand, which continually crash into the Earth’s…
A fast radio burst was detected live at Parkes in May 2014.
Astronomers are trying to improve their hunt for rapid bursts of radio emission in the universe called Fast Radio Bursts (FRBs) so they can better observe these mysterious events, which are thought to…
A group of excited observers during a peak of the Geminids meteor shower.
Watching meteors in the night sky can be fun, although typically you only see a few flashes an hour. But there are certain times of the year when you can see many more – events known as meteor showers…