According to legend, these were the words quietly spoken by Galileo in 1633 immediately after being forced by Church inquisitors to recant his heliocentric view that the Earth revolves around the sun. But how do we know that Galileo’s view was correct and not that of the inquisitors? Foucault’s pendulum, that’s how. Leon Foucault‘s famous pendulum is not only one of the coolest science experiments ever, it also proves that Galileo’s hunch (“And yet it moves”) was right.
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prior probability 
I believe we can tell by looking at the position of the stars. We can look at the position of the stars and the proximity between them. As time changes so does our view of the stars, but the distance between the stars stays relatively the same. With this we can ascertain that the universe is stationary and that Earth is moving.
Yes, but … our observation of the stars might still be consistent with both hypotheses: 1. that Earth is moving, and 2. that the stars are moving