How It's Made: Telescopes
20:01
How Binoculars, Telescopes, Space Pens, & More Are Made | How It's Made | Science Channel
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How to (Almost) Make a Telescope from Scratch
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The Ancient City That Mastered Water
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The "Impossible Torpedo" was real
29:02
The largest telescope that will ever be built*
17:00
How to Make a Telescope - 8 Inch Newtonian Reflector (Part 1)
5:25
How It's Made: Car Tires
24:29