The bright star at the bottom of Orion in the eastern sky is Betelgeuse. It is a cool giant star many hundreds of times wider than our Sun. Astronomers call such stars, ‘red giants’. The name Betelgeuse comes from an Arabic phrase meaning, ‘the armpit of the central one’.
- Sydney Observatory
- Observations Blog
- Observations Archive
- Astronomy Resources
- MAAS Blogs
Discover Kings Cinema, an art deco cinema in the style of the 1930s installed at Powerhouse Museum.
Learn how scientific and technological breakthroughs have answered everyday questions.
Explore Australia’s retail history in this display of our retailing and advertising collection.