We now know different, but were those views really all that crazy back then? Probably not! The evolution of scientific knowledge has proven that, when it comes to astronomy, you can't always rely on your senses. Hundreds of years ago, people believed Earth was flat and that the Sun traveled around Earth. Does it seem like you're walking on a giant, round ball? Do you feel yourself flying through the air around the Sun? No! Based upon your senses, would you guess that Earth is round? Does it seem like you're traveling around the Sun instead of the other way around?
However, have you ever considered how revolutionary those ideas really are? For example, Earth is round and Earth travels around the Sun.
There are a few basic astronomy facts you probably take for granted.
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