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Sven Piper

Sven Piper

Sven Piper
Why is the surface of the Sun so much colder than the core? | #shorts

Why is the surface of the Sun so much colder than the core? | #shorts

00:42
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How the ancient Greeks invented astronomy | #shorts

How the ancient Greeks invented astronomy | #shorts

00:53
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The Life of Arthur C. Clarke

The Life of Arthur C. Clarke

06:46
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Update on Dmitry Rogozin | #shorts

Update on Dmitry Rogozin | #shorts

00:43
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