A guide to what's up in the sky for Southern Australia
Starwatch for August 2026 - Sun 2nd Aug 2026
Published 2nd Aug 2026
The mid-winter Milky Way is still high overhead, and stars like Vega, Altair and Fomalhaut help to light the way on these cold nights. They will soon give way to the spring stars and constellations. Like our Sun, these stars are what astronomers refer to as Population I stars. Let’s explain that.
Colliding Galaxies in Ara - Sat 1st Aug 2026
Published 1st Aug 2026
ESO138-29 - Colliding Galaxies in Ara Right Ascension: 17:29:12 Declination: -62:27:35
Starwatch for July 2026 - Sat 27th Jun 2026
Published 27th Jun 2026
The centre of our galaxy, the Milky Way, is directly overhead during these cold winter evenings, and it is here, that we find one of the most prominent constellations.
M57—The Ring Nebula in Lyra - Fri 26th Jun 2026
Published 26th Jun 2026
The Ring Nebula, M57, is a planetary nebula in the northern constellation of Lyra
Starwatch for June 2026 - Mon 1st Jun 2026
Published 1st Jun 2026
The winter Milky Way shines across the sky from east to west in a blaze of starlight.
The Lagoon Nebula - Sat 30th May 2026
Published 30th May 2026
Image—The VLT Survey Telescope at ESO's Paranal Observatory in Chile
Starwatch for May 2026 - Sat 2nd May 2026
Published 2nd May 2026
The dominant constellation in our evening sky during autumn and winter is Scorpius, currently shining brightly in the eastern sky. Its brightest star, Antares, is a huge star of gargantuan proportions.
M83 - Spiral Galaxy in Hydra - Fri 1st May 2026
Published 1st May 2026
Messier 83 or M83 is a barred spiral galaxy approximately 15 million light-years away in the constellation borders of Hydra and Centaurus.
Starwatch for April 2026 - Tue 31st Mar 2026
Published 31st Mar 2026
As you venture out these crisp autumn evenings for a look at the night sky, bid a fond farewell to our starry companions over summer, and welcome the stars that will become our friends during the frosty winter evenings ahead. Stars with names like Arcturus, Antares, Spica, and Regulus.
NGC 1566 - Mon 30th Mar 2026
Published 30th Mar 2026
Spiral Galaxy in Dorado NGC 1566 is a spiral galaxy in the southern constellation of Dorado, the swordfish. It was discovered on May 28, 1826, by Scottish astronomer James Dunlop, observing from Paramatta Observatory in New South Wales. At 10th magnitude, it requires a telescope to view it.
Starwatch for March 2026 - Fri 27th Feb 2026
Published 27th Feb 2026
It seems just like yesterday that we greeted the return of the summer stars to the evening sky, and here we are in March, getting ready to wave goodbye!!
M44—The Beehive Cluster - Wed 25th Feb 2026
Published 25th Feb 2026
The Beehive Cluster is an open cluster in the constellation Cancer.
Starwatch for February 2026 - Mon 2nd Feb 2026
Published 2nd Feb 2026
During these warm February evenings, the summer Milky Way is visible directly overhead, running north-south across the sky. The evening sky is resplendent with many brilliant stars. From Capella in the north to the Pointers in the south, the sky is a sheer delight to explore.
NGC 2439—Open Star Cluster - Sun 1st Feb 2026
Published 1st Feb 2026
NGC 2439—Open Star Cluster - Distance: 12,500 light years
Starwatch for January 2026 - Tue 30th Dec 2025
Published 30th Dec 2025
We can think of our location in the universe along the lines of an address. The street would be planet Earth, the local government area would be the solar system, and the country would be the Milky Way Galaxy.
M1 - the Crab Nebula - Mon 29th Dec 2025
Published 29th Dec 2025
Distance: 6,500 light years
Starwatch for December 2025 - Tue 25th Nov 2025
Published 25th Nov 2025
All the stars we see in the night sky belong to our Milky Way galaxy. However, there are some objects outside of the Milky Way galaxy that can be seen quite clearly with no or little optical power.
Starwatch for November 2025 - Wed 29th Oct 2025
Published 29th Oct 2025
A 101 years ago, on November 23, 1924, the universe got larger.
Starwatch for October 2025 - Thu 2nd Oct 2025
Published 2nd Oct 2025
Astronomical distances can be mind boggling. Our closest neighbour, the Moon, is 380,000 kms away — equal to about 10 trips around Earth’s equator.
Starwatch for September 2025 - Wed 3rd Sep 2025
Published 3rd Sep 2025
A few lingering stars of winter are still in view during the evening. Antares, Altair, Vega have lit up the cold winter nights for us. But there is really only one bright star that puts in its best showing during these early spring nights:
NGC 7293 – The Helix Nebula - Tue 2nd Sep 2025
Published 2nd Sep 2025
Image © Patrick Cosgrove. The Helix Nebula, also known as NGC 7293, is a planetary nebula (PN) located in the constellation Aquarius.
Starwatch for August 2025 - Sun 3rd Aug 2025
Published 3rd Aug 2025
Imagine yourself sitting on a rock on the dark side of Moon, gazing up at the Milky Way. There's no stray lights, no atmosphere to dull your view of the night sky. The stars are so brilliant, so big, you could reach out and touch them.
NGC 4755 - Fri 1st Aug 2025
Published 1st Aug 2025
The Jewel Box Star Cluster. Image © Sergio Equivar, Buenos Aires, Argentina
Starwatch for July 2025 - Thu 3rd Jul 2025
Published 3rd Jul 2025
Look up overhead on any of these frosty winter’s nights, and if you have a dark area away from direct lighting, you’ll see the Milky Way shining brightly.
Galaxy NGC 6744 in Pavo - Wed 2nd Jul 2025
Published 2nd Jul 2025
This is NGC 6744, a spiral galaxy bearing similarities to our home galaxy, the Milky Way.
Starwatch for June 2025 - Mon 2nd Jun 2025
Published 2nd Jun 2025
The winter Milky Way shines across the sky from east to west in a blaze of starlight.
Eta Carinae Nebula (NGC 3372) - Sun 1st Jun 2025
Published 1st Jun 2025
Eta Carinae Nebula (NGC 3372) Distance: 7500 Light Years
Starwatch for May 2025 - Wed 30th Apr 2025
Published 30th Apr 2025
We have recently seen the destructive power of extreme weather events, such as cyclones and the flooding in southwest Queensland. It left in its wake flooded businesses, broken roads, power outages, and other problems. The repair bill will run into billions of dollars.
NGC 5139 - Omega Centauri - Tue 29th Apr 2025
Published 29th Apr 2025
Globular Cluster in Centaurus
Starwatch for April 2025 - Wed 2nd Apr 2025
Published 2nd Apr 2025
The crisp autumn evenings of April offer an ideal opportunity to explore the majesty of the southern sky. Go find yourself a nice dark spot in the back-garden, and let your eyes become accustomed to the darkness. Notice how many more stars you can see, even after a few minutes, as the pupils of your eyes expand to let as much light in as possible.
IC434 -The Horsehead Nebula - Tue 1st Apr 2025
Published 1st Apr 2025
Distance: 1500 Light Years |Constellation - Orion
Starwatch - March 2025 - Mon 3rd Mar 2025
Published 3rd Mar 2025
There's nothing more magical than to lie down on your back lawn on a warm summer evening and gaze up at the brilliant night sky.
Eta Carinae Nebula (NGC 3372) - Sat 1st Mar 2025
Published 1st Mar 2025
Distance: 7500 Light Years
Starwatch - February 2025 - Wed 5th Feb 2025
Published 5th Feb 2025
Two bright beacons hold centre stage in our night sky during February. In the beautiful pastel hues of an Australian summer sunset.
M104 - The Sombrero Galaxy - Tue 4th Feb 2025
Published 4th Feb 2025
Distance: 31 Million Light Years
Starwatch - January 2025 - Wed 1st Jan 2025
Published 1st Jan 2025
There's nothing more magical than to lie down on your back lawn on a warm summer evening and gaze up at the brilliant night sky.
The Pleiades star cluster - Tue 31st Dec 2024
Published 31st Dec 2024
The Pleiades star cluster (The Seven Sisters) Distance: 435 Light Years
Starwatch - December 2024 - Sun 1st Dec 2024
Published 1st Dec 2024
The stars that shine at night do so from immense distances.
Starwatch - November 2024 - Mon 4th Nov 2024
Published 4th Nov 2024
We recently saw the destructive power of hurricanes Milton and Helene, as they cut a path of destruction through various states in the US. They left in their wake flooded businesses, broken roads, power outages, and other problems. The repair bill will run into billions of dollars.
Large Magellanic Cloud - Fri 1st Nov 2024
Published 1st Nov 2024
Distance: 163,000 light years Right Ascension 05 : 23.6 Declination -69 : 45
Starwatch - October 2024 - Mon 30th Sep 2024
Published 30th Sep 2024
After a spectacular encounter with Pluto back in July 2015, the New Horizons spacecraft was redirected to visit a more distant object, known as 2014 MU69.
OCTOBER’S DEEP SKY HIGHLIGHT - Sun 29th Sep 2024
Published 29th Sep 2024
M31—The Andromeda Galaxy Distance: 2.5 million Light Years
Starwatch - September 2024 - Sat 31st Aug 2024
Published 31st Aug 2024
Spring is just around the corner, and with it, comes the promise of warmer evenings and clearer skies. And hopefully the opportunity to spend more time looking up!
NGC 253 – Galaxy in Sculptor - Fri 30th Aug 2024
Published 30th Aug 2024
NGC 253 is the brightest member of the Sculptor Group of galaxies.
Starwatch - August 2024 - Tue 30th Jul 2024
Published 30th Jul 2024
f you're brave enough to venture outside these cold winter nights, you'll be greeted by the heart of our Milky Way galaxy directly overhead. Find yourself a dark space in your backyard on a clear moonless night, and look straight up.
The Swan Nebula - Mon 29th Jul 2024
Published 29th Jul 2024
M17 – The Swan Nebula in Sagittarius
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
The mid-winter Milky Way is still high overhead, and stars like Vega, Altair and Fomalhaut help to light the way on these cold nights. They will soon give way to the spring stars and constellations. Like our Sun, these stars are what astronomers refer to as Population I stars. Let’s explain that.
Every “normal” star is a ball of hydrogen and helium, the simplest of all chemical elements. All of the hydrogen and most of the helium were forged in the Big Bang.
Stars also contain smatterings of heavier elements, which are known as metals. These elements were forged by the stars themselves. As the stars die, they expel some of these elements into space, where they can be incorporated into new stars. So, each generation of stars contains a higher proportion of metals; everything from carbon and oxygen to iron and lead.
Based on the amount of metals, astronomers divide stars into two broad categories — Population I and Population II.
The Sun belongs to Population I. These stars contain fairly high percentages of metals, about two percent in the case of the Sun. These stars formed recently, after earlier generations had pumped the heavy elements into space.
The earliest generations yet seen form Population II. These stars have a much smaller percentage of metals, which means they formed when there were fewer metals around; perhaps less than a billion years after the Big Bang. When the massive ones used up their hydrogen reserves, they started the production of chemical elements heavier than hydrogen. Eventually, they exploded as supernovae, and dispersed their material into interstellar space. This was needed for the later formation of Population I stars, planets and life as we know it.
One of the main tasks for the James Webb Space Telescope is to search for Population III stars. These stars are the hypothetical first generation of stars in the universe, born completely from pristine primordial gas (hydrogen and helium). Because they formed before the first supernovae, they were entirely free of heavier elements (metals) and are believed to have been exceptionally massive, luminous, and short-lived. The hunt continues.
The star Vega is a bit of a puzzler. Over the years, astronomers reported evidence of several planets orbiting the bright star. But none of the planets has been confirmed. And observations by two space telescopes revealed nothing. But they left open the possibility of planets.
You can find Vega low in the north in the mid-evening. It’s about 25 light-years away. It’s a bit bigger, brighter, and heavier than the Sun. And it’s younger, at 450 million years – just 10 percent the Sun’s age.
A disk of dust encircles Vega. Hubble and James Webb Space Telescopes took a good look at the system. They showed that the disk is quite smooth. It’s probably renewed by comets and asteroids. They shed material as they orbit the star, and even more when they slam together. The smoothness of the disk means there are no giant planets orbiting within it. If there were, they would clear out wide gaps.
There is one gap. But it’s not completely open. A planet several times the mass of Earth could orbit in that zone, partially clearing it out. And there could be smaller planets elsewhere in the system – especially close to Vega. But so far, there are no confirmed planets, leaving Vega to travel through space alone.
The brightest star of the Southern Cross is like a whole episode of “Dancing with the Stars.” It consists of perhaps six or more stars. They’re all twirling through their own ballroom, linked by the strong hands of gravity.
Alpha Crucis, marked as Acrux on the chart, is 320 light-years away. To the eye alone, it looks like a single point of light – the 13th-brightest star in the night sky. But binoculars or a telescope show two stars. Both of them are at least a dozen times as massive as the Sun, and thousands of times brighter. They’re so far apart that it takes about 1300 years for them to complete a single orbit around each other – a slow turn across the dance floor.
But one of those stars is actually two stars on its own. They’re so close together that not even the biggest telescopes can see them individually – the second star reveals its presence only to special instruments. But it’s also bigger, heavier, and brighter than the Sun. The two stars are dancing to a faster tempo – one turn around each other every 76 days.
Those three stars might have three more companions. They’re a long way from the first trio, and they’re not as impressive. But they appear to share a common motion through the galaxy with the brighter trio. That means the two groups could be gravitationally bound to one another – dancing a waltz that would require a hundred thousand years to complete one turn across the floor.
There’s a beautiful conjunction between the Moon and the planet Venus on the evening of August 16. Venus is the “evening star” – the brightest object in the night sky after the Moon. The Moon is a thin crescent – the Sun illuminates only a sliver of the lunar hemisphere that faces Earth. Plenty of opportunity for beautiful nightscape photography.
We can’t see it, but the Moon is moving farther from us, by about 3.8 centimetres per year. It’s been moving away since it was born, when Earth was young. In fact, that shift was one of the clues that led to the leading theory of how the Moon was born. That number is not an estimate. It is a direct measurement, made by firing laser pulses from Earth toward retroreflectors left on the lunar surface by Apollo astronauts, timing the return journey to the nearest nanosecond, and calculating the distance with extraordinary precision.
In the chaotic conditions of the early solar system, Earth was walloped by a planet about the size of Mars. That blasted debris into orbit around Earth. Much of that material quickly coalesced to form one or more moons. Today’s Moon is the only survivor.
The collision caused Earth to spin much faster, so a day was much shorter than it is now. Gravitational interactions between Earth and Moon have slowed us down. But they’ve also caused the Moon to slide farther away.
The mechanism is elegant and gradual. The Moon's gravity raises tidal bulges in Earth's oceans. As Earth rotates, those bulges are carried slightly ahead of the Moon's position. The gravitational pull between the ahead-running bulge and the Moon transfers a small but continuous amount of Earth's rotational energy to the Moon — slowing Earth's rotation fractionally and pushing the Moon into a slightly wider orbit with each passing year.
That is why Earth's days were shorter billions of years ago. That is why the Moon once appeared larger in the sky and generated stronger tides. And that is why, over geological timescales, the gradual drift accumulates into distances that fundamentally reshape the relationship between the two bodies.
Today the Moon sits 384,400 kilometres away. At 3.8 centimetres per year, it will be 38,000 kilometres farther in a billion years. The tides will be weaker. Earth's rotation will have slowed further. The Moon will appear slightly smaller.
The Moon is at Last Quarter on August 6th, at New on the 13th, at First Quarter on the 20th, and Full on August 28th.
