The main buildings at Melbourne Observatory. Image and copyright Nick Lomb ©, all rights reserved Question from Harry R: A 2006 article by David Hathaway says that terrestrial magnetism is measured at two points on Earth - in UK and Australia.
- Sydney Observatory
- Observations Blog
- Observations Archive
- Astronomy Resources
- MAAS Blogs
There has been much talk about the dates of the star signs over the last few days so we thought it might be nice to have the correct dates for each zodiac sign on Sydney Observatory’s website. Most of us aren’t aware that each star sign of the zodiac (which means 'path of the animals') is determined by the position of the Sun at midday on the day of our birth.
A sketch of the Grus Quartet galaxies from a suburban location. Image and copyright Harry Roberts ©, all rights reserved After dusk overhead in spring and towards the south-west in the middle of summer, the Grus star group hosts some remarkable deep sky objects, objects bright enough to be seen with ‘scopes big and small from urban sites.
The change from one day to the next in the length of daylight durind 2011. Graph and calculation Nick Lomb The length of the day is the interval between sunrise and sunset. We have discussed in a previous post how that varies during the year.
6 June 2012 If you miss this transit of Venus, you'll have to wait more than 100 years for the next one A transit of Venus occurs when Venus is observed from Earth to move across the face of the Sun.
A drawing of the Great Nebula in Orion (M42) as seen through a H-beta filter. Images and copyright Harry Roberts ©, all rights reserved Christmas/New Year time is “giving time”; and no deep sky target “gives” like Orion’s M42 – even under suburban skies.
The variation in the Earth's distance from the Sun in astronomical units. An astronomical unit is the average distance of the Earth from the Sun and is approximately 150 million km. Diagram Nick Lomb Today the Earth is at perihelion, that is, at its closest to the Sun in its slighly elliptical or oval-shaped path around the Sun.
SOLAR ECLIPSES Total eclipse of the Sun 14 November 2012 This will be the first opportunity to see a total eclipse from Australia since the South Australian eclipse of 2002. In 2012 the eclipse will be visible from North Queensland.