The story of the discovery of heliocentricism is a lot more complex than this; the people who didn't immediately accept heliocentric theories (including the ancient Greeks - look up Aristarchus) often had good, scientific reasons for doing so. Or just look up at the sky at night yourself and ask yourself how you, personally, would confirm it if someone told you that what you see in the sky is better explained by the Earth moving around the sun than the sun moving around the Earth.