We Might Find Alien Life In 2255 Days
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The Absurd Search For Dark Matter
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Testing the US Military’s Worst Idea
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What Happens If A Star Explodes Near The Earth?
29:30
This Is Why You Can’t Go To Antarctica
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How a Blind Mathematician Became the World's Greatest
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Who made these circles in the Sahara?
20:06
These are the asteroids to worry about
20:04