A guide to what's up in the sky for Southern Australia
Starwatch July 2024 - Mon 8th Jul 2024
Published 8th Jul 2024
Look up overhead on any of these frosty winter’s nights, and as long as you have a dark area away from direct lighting, you’ll see the band of the Milky Way shining brightly.
Merging Galaxies - Sun 7th Jul 2024
Published 7th Jul 2024
NGC 4038-4039 Merging Galaxies - The Antennae. Distance: 45 million Light Years.
Starwatch June 2024 - Sun 2nd Jun 2024
Published 2nd Jun 2024
About half-way up the northern evening sky, a bright star shines.
The Trifid Nebula - Sat 1st Jun 2024
Published 1st Jun 2024
M20 – The Trifid Nebula in Sagittarius
Starwatch May 2024 - Thu 2nd May 2024
Published 2nd May 2024
A myriad of bright stars adorn the late autumn evening sky.
Galaxy NGC 5128 - Wed 1st May 2024
Published 1st May 2024
Galaxy NGC 5128—Centaurus A
Comet Pons-Brooks - Wed 10th Apr 2024
Published 10th Apr 2024
Looking west on the evening of April 27., 30 minutes after sunset. Locate the orange star Aldebaran, then scan to the left until you come to a fuzzy spot in the sky. Train your binoculars on it, the comet will be 239 million kilometres away. Graphic generated with Stellarium planetarium software.
M104 - The Sombrero Galaxy - Tue 9th Apr 2024
Published 9th Apr 2024
M104 - The Sombrero Galaxy. Distance: 31 Million Light Years
Starwatch - April 2024 - Mon 8th Apr 2024
Published 9th Apr 2024
Some of the brightest stars in the whole sky can be seen during these crisp autumn evenings.
Starwatch - March 2024 - Wed 6th Mar 2024
Published 6th Mar 2024
What a wonderful time of the year this is to be observing the night sky. The weather is warm, the nights clear, and the Milky Way shines directly overhead!
Object of the Month - Mon 4th Mar 2024
Published 4th Mar 2024
Eta Carinae Nebula (NGC 3372)
Distance: 7500 Light Years
Right Ascension: 10 : 43.8 | Declination: -59 : 52
Look up overhead on any of these frosty winter’s nights, and as long as you have a dark area away from direct lighting, you’ll see the band of the Milky Way shining brightly.
The bulge of the Milky Way will be at its biggest here, as we are looking towards the centre of our galaxy, towards the constellation of Sagittarius.
Today, we recognize this band of light for what it is: the edge-on view of our own galaxy of stars. This is a fantastic area of sky to explore with binoculars. Vast areas of gas and dust, superimposed upon millions of countless stars await the observer. As you observe those tiny pinpoints of light, just remember that their light has undertaken a journey of nearly 30,000 years to reach you.
Some of these objects are stellar nurseries; regions where clouds of gas are collapsing to give birth to new stars. Others are at the other end of the stellar life cycle; big clusters of geriatric stars. One such cluster is M22, at about 10,000 light-years away. It contains half a million stars, all packed into a region of space only a few dozen light-years across. By comparison, a similar volume of space around our own solar system contains only a few hundred stars. M22 is a globular cluster. At more than 12 billion years of age, it's one of the oldest objects in our entire galaxy.
The very centre of our Milky Way galaxy is bright, crowded, and busy. It's filled with fast-moving stars, big clouds of gas, and turbulent magnetic fields; all surrounding a black hole that's at least two million times heavier than the Sun.
The gravity of the black hole is so powerful that anything that enters it is trapped, including light. But it's encircled by a spinning disk of hot gas that's spiralling into the black hole. The hot gas emits X-rays, which orbiting observatories can detect. Recently, astronomers found a long filament of gas that's squirting away from the black hole. The gas is moving into the galaxy at almost the speed of light; adding more turmoil to the already busy centre of the Milky Way.