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Genius by Stephen Hawking | Clip | How Many Stars Are There in the Galaxy?

The volunteers are given a spoon of sand with 50,000 grains. Each grain of sand represents a single star. They try to guess how many stars there are in the galaxy and then use the spoon of sand to create a pile of stars with their estimate. How big will the pile of sand be and how close will it be to the actual number of stars in our galaxy?

S1 E2 | 0:01:55 | AIRED: 5/17/2016 |
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