Because the Scientific Revolution we have come a long way to understanding our universe. Galileo Galilei proved the Copernican Heliocentric view and this is helpful for astronomers understanding and exploration of the universe today. This is also good because now we know that Ptolemy and Aristotle Geographic views were false. Kepler planetary motion discovery was also useful the orbit for satellites. Hubble's discovery of other universes is also helpful for scientist knowledge of other galaxies.
Discovery