You're living a normal life. You're dining at a table. It's flat, motionless - thus you can eat your food in peace. You look at the sunset over a flat horizon. You notice the moon coming into view, about the same size as the sun. Along comes a hook nosed creature. He tells you that your table is actually planted on a ball. That the horizon although looks flat, is actually curved. That this ball, although feels motionless, is spinning at 1,000 miles per hour. That the sun and moon, while they appear to be the same size, are 400x times difference and 400x times farther part and despite their similar trajectories overhead that in fact the moon is actually orbiting our ball, and our ball is orbiting the sun. He says our ball is orbiting the sun at 66,600 MPH. And that you must pay your taxes so that his organization may continue to tell you more of these fascinating things you did not know. He tells you he's already gone to the moon and landed there several times but that he has since destroyed the technology, and it's very difficult to build it back. Your homework assignment is to prove the hooknosed creature's claims. (if you finish that homework, your next task is to stick water to a spinning ball. No cheating; you can't use CG so you will have to do this experiment in a testable, measurable, repeatble way so that there can be independent verification of your miracle) Goodluck!