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Marcus Chown

@marcuschown

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

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Light takes about 30,000 years to get out of the Sun. So today's sunlight was made at the height of the last ice age

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343 days ago

Light takes about 30,000 years to get out of the Sun. So today's sunlight was made at the height of the last ice age

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