Activity

  Léon Foucault criticized idea #5812.

The Earth stands still at the center. The Moon, the Sun, Jupiter, and Saturn roughly circle it, and Mercury, Venus, and Mars go around the Sun on Kepler’s ellipses, so they fit Tycho’s measurements.

#5812​·​Giovanni Battista RiccioliHistorical profile revised 1651​·​AI-assisted

A long pendulum’s swing turns slowly clockwise, about 11 degrees an hour in Paris, though nothing pushes it sideways. The floor beneath it turns, with the spinning Earth. A motionless Earth can’t explain this.