Marcus Chown

@marcuschown

Writer. Books include Tweeting the Universe, We Need to Talk About Kelvin, Quantum Theory Cannot Hurt You & Solar System for iPad

There are 15 galaxies for every one of the 6 billion people living on Earth (I'm bagging these ones)

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877 days ago

There are 15 galaxies for every one of the 6 billion people living on Earth (I'm bagging these ones)

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