- uploaded: Feb 16, 2013
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How Big, How Far, How Fast (full documentary)
The numbers of the universe boggle the human mind. In the observable part of the universe, there is something like 100 billion galaxies, each with billions of stars. The Andromeda galaxy is about 2.5 light years away. The Earth is orbiting the Sun at about 66000 miles per hour.
These kind of numbers are hard to comprehend, but are there ways to scale down the numbers, so we can understand how big, how far and how fast.