How Many Stars Are There in the Galaxy?
Clip: Episode 2 | 1m 55sVideo has Closed Captions
The volunteers find a way to count and visualize the number of stars 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?
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Problems with Closed Captions? Closed Captioning Feedback
How Many Stars Are There in the Galaxy?
Clip: Episode 2 | 1m 55sVideo has Closed Captions
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?
Problems with Closed Captions? Closed Captioning Feedback
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Thinking Like a Genius
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Preview: Ep2 | 30s | See why the team has their minds blown when they try to work out the likelihood of aliens. (30s)
Video has Closed Captions
Clip: Ep2 | 2m 1s | Stephen Hawking explains that he believes we’ll encounter aliens in our lifetime. (2m 1s)
Testing Out An Alien Broadcast
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Clip: Ep2 | 2m 39s | Learning how we can listen to an alien broadcast from deep space. (2m 39s)
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