Articles on Astronomy

Displaying 1 - 20 of 306 articles

An artist’s impression of a Sun-like star close to a rapidly spinning supermassive black hole, with a mass of about 100 million times the mass of our Sun. ESA/Hubble, ESO, M. Kornmesser

Black holes are even stranger than you can imagine

The discovery of a new black hole adds to our understanding of these celestial objects that fascinate in both fact and fiction.
Have we really discovered other “Earth-like” planets orbiting around other stars? Understanding what we do and do not know about exoplanets is the key to answering this question. ESO/L. Calcada/N. Risinger/Reuters

Until we get better tools, excited reports of ‘habitable planets’ need to come back down to Earth

Over the last 20 years, advances in the field of exoplanet discovery have excited the imaginations of scientists and enthusiasts alike. But we're in position to know yet whether a planet is habitable.
Patience can be rewarded as with this composite of the 2016 Geminids meteor shower, seen over Mt Teide volcano on the Canary Islands, off Spain. Flickr/StarryEarth

Look up! Your guide to some of the best meteor showers for 2017

2017 is looking to be a spectacular year for meteor showers. So here's what to look out for in both the northern and southern skies.
Old sky map depicting boreal and austral hemispheres with constellations and zodiac signs. Marzolino/Shutterstock

What would the ancient astrologers have told us about 2017?

Up until the seventeenth century, astrology was seen as a scholarly tradition, and it is credited as influencing the development of many modern day subjects.
The discovery of the year was the first detection of gravitational waves. LIGO/T. Pyle

2016: the year in space and astronomy

Colliding black holes to exploding spacecraft, 2016 was an incredible year for astrophysics.
Part of CSIRO’s ASKAP antennas at the Murchison Radio-astronomy Observatory (MRO) in Western Australia. Australian SKA Office/WA Department of Commerce

A machine astronomer could help us find the unknowns in the universe

It's almost impossible for any human to spot something unknown or unusual in the massive amount of data collected by our telescopes. So we're teaching an intelligent machine to search the data for us.
The GLEAM view of the centre of the Milky Way, in radio colour. Red indicates the lowest frequencies, green indicates the middle frequencies and blue the highest frequencies. Each dot is a galaxy, with around 300,000 radio galaxies observed as part of the GLEAM survey. Natasha Hurley-Walker (Curtin / ICRAR) and the GLEAM Team

What the universe looks like when viewed with radio eyes

To the naked eye the universe we can see on a clear night is dotted with thousands of stars. See through radio eyes, then things look very different.

Top contributors