Describe the contributions of Galileo to astronomy and the Copernican revolution. Include in your response a list of observations made by Galileo of the Moon, the Sun, Venus, and the Moons of Jupiter. Be specific, describe what he saw, the conclusions he drew from these observations, and how these conclusions either supported or refuted the prevailing model of the Cosmos.
Be sure to provide substantive responses to at least one of your classmates. A substantive response will address some specific point of the discussion with added relevant scientific content.