Sunset viewed from Sydney Observatory on 29 August 2005. Image and copyright Nick Lomb ©, all rights reserved In 2011 spring equinox for the southern hemisphere is on Friday 23 September at 7:05 pm AEST.
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The Galileo spacecraft obtained this image of the Earth with Australia prominently visible on 11 December 1990. Courtesy NASA/JPL Yesterday (12 September 2011) one of my colleagues at Sydney Observatory announced a significant birthday on the Observatory's Facebook page with the comment that in his lifetime he had travelled just under 47 billion km around the Sun.
The northern hemisphere constellation of Lyra the Lyre with its bright star Vega. Drawing Nick Lomb using Stellarium software Did you know there is an upside down lyre hanging low in the northern sky each evening after dusk?
Jupiter and its Galilean moons on 2 September 2011 at 2:07 UT as seen from a spot off the coast of Brazil. Diagram Nick Lomb using Stellarium Jayce Varghese asks: Hi I am a navigational officer onboard a Maersk line vessel (Maersk Lima) and I think I just sighted jupiter at its brightest in my entire sea life and near to it were three small white dots which I think are the moons.
The Southern Cross as seen from the centre of a large city like Sydney or Melbourne. Image Nick Lomb using Stellarium Look up from the centre of a major city like Sydney or Melbourne and you can only see the brightest stars.
Participants in a Deadly Moons workshop at the Wicklow Arts Festival pose with the creator of the workshop Deirdre Kelleghan. Courtesy Deadly Moons/UNAWE/Deirdre Kelleghan Deadly Moons is a drawing workshop to inspire children with astronomical images created by Deirdre Kelleghan of Ireland and an occasional contributor to the Sydney Observatory blog with her wonderful astronomical sketches.
To help you learn about the southern night sky, Sydney Observatory provides an audio guide/podcast, transcript of that audio, and a sky map or chart each month. This month's audio sky guide is presented by Geoffrey Wyatt, senior astronomy educator at Sydney Observatory.
The stars of the constellation of Sagittarius the Archer. As indicated on the drawing, the constellation has an informal alternative name of the Teapot. The positions of the two best known nebulae in the constellation, Messier 8 and Messier 20, are also shown.
The Transit of Venus outreach wound up with a visit to Bega and Eden last Friday, August 19th. Three high schools and two public sessions permitted around 90 people to attend despite the heavy morning rain at Bega Council Chambers and later at Eden Marine High School.
The astronomical coordinate system around the south celestial pole. The circles represent lines of declination while the radial lines from the pole are the line of right ascension. Drawing from Stellarium To locate stars in the sky astronomers use a two coordinate system very similar to the longitude–latitude system used to specify coordinates on Earth.
Just over 40 primary age children from the inner city schools of Our Lady of Mount Carmel Waterloo and Alexandria Park Community School attended Waterloo Community Library on Monday for a wonderful opportunity to make their own electronic circuits.
National Science Week 2011 started with a clear view of the Sun for the Transit of Venus Workshops at Springwood High School today. Springwood High School, Blue Mountains Grammar School and Korowal High School sent 55 physics, chemistry and maths students to attend the first of three outreach visits to areas associated with Sydney Observatory’s 1874 Transit of Venus observations.
A prominence, sketched in the light of hydrogen atoms, with an interesting 'hedgerow' shape. It occurred on 5 August 2011 and stretched 250 000 km around the edge of the Sun. Image and copyright Harry Roberts ©, all rights reserved Over the last few weeks the Sun has been becoming increasingly active as can be expected at this stage of the 11-year sunspot cycle.
The constellation of Scorpius is overhead in the early evening during August. A few of the main stars and star clusters in the constellation are marked. Diagram Nick Lomb Winter is a great time to observe the sky.
Prominences on the edge of the Sun on 5 & 6 June 2011. Image and copyright Harry Roberts ©, all rights reserved 2011 June 5 and 6 saw some fine prominences at both the east and west limbs (Figs) - and we see the trapped plasma (almost) any time we view the Sun in H-alpha.