Want to see something you won't be able to see again for another three years? Well, be outside on Saturday and you'll see a lunar eclipse. It will only be visible from Australia and in some parts of Asia.

The entire moon will turn red, as it falls behind Earth's darkest shadow. Sydney Observatory's Geoffrey Wyatt says:

People will see the shadow of the earth moving across the moon, and for 52 minutes witness the usually milky white moon turn a blood-red rusty colour.

This is the second total lunar eclipse this year, with the previous one in May. Wyatt says that the east coast will be the one of the best places on Earth to see the eclipse. It is set to start at around 11:30pm on Saturday, and last for around three hours.

Thank you to my wife for reminding me of this news!