I read it at a news stand (cheapskate that I am).
Some of the key issues I recalled and looked up : Copernicus (1543) : Not actually improved until Newton's theory of gravity (1687) explained how the earth could be moved in its orbit, Bessel's parallax (1838) observation got the distance to to the nearest stars right, and Airy's diffraction analysis (1835) showed that the apparent size of stars is an optical artifact.
