The sky is blue due to Rayleigh scattering. As sunlight reaches Earth's atmosphere, it is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

The capital of Australia is Canberra. It is located at the northern end of the Australian Capital Territory (ACT), 280 km (170 mi) south-west of Sydney and 660 km (410 mi) north-east of Melbourne.

It was chosen as a compromise between the two largest cities, Sydney and Melbourne.

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