The Danish astronomer Ole Roemer was born 370 years ago today. He is credited with being the first person to measure the speed of light using observations of Jupiter’s moon Io.
- Sydney Observatory
- Observations Blog
- Observations Archive
- Astronomy Resources
- MAAS Blogs
Explore space shuttles, the Zero Gravity Space Lab, satellites and space craft.
Explore Australia’s retail history in this display of our retailing and advertising collection.
The Strasburg Clock model has been one of the most popular exhibits at Powerhouse Museum for over 100 years.