![]() None of these things has stood up to scientific tests. There are people, who believe that alien spacecraft visit the Earth, or believe that astrologists can predict the future, or believe that there are huge human-like creatures walking around in the woods that no one has ever seen up close. When they try to prove that they have it, they might say they can’t– not while you’re watching or listening or even thinking. People claim that they can predict the future with an extra sense (Extra Sensory Perception) that the rest of us don’t have or can’t use. But, there are many people, who believe in extraordinary claims without looking for extraordinary proof. The round Earth is an example of an extraordinary claim that needed extraordinary proof. And, the claims that go with these way-out ideas are pretty extraordinary as well. If one scientist claims that she or he can fill a balloon with invisible gas using vinegar and baking soda, other scientists can try it and see if they get the same result. ![]() One of the big ideas in science is that ideas can be tested. It was considered a bit crazy to think of it as a big ball. ![]() People once thought that world was flat or nearly flat.
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