'We Don't Know What 96% Of The Universe Is Made Of

Professor Brian Cox is helping us understand the solar system.
Photograph: Mike Hogan/Antonio Saba

From The Guardian:

Pop star-turned-physicist Brian Cox speaks about his new TV series on the solar system.

It's big space, isn't it?

It's 93 million miles to the Sun: that's a long way. It takes light eight minutes to do that. There are 100bn galaxies in the observable universe. If you take a 5p coin and hold it 75 feet away, the space in the sky it would obscure would hold 10,000 galaxies. It's mindblowing. I don't think anyone has a grasp of that other than to say: it's big.

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