Who Was Rabbi David Gans? David Gans (1541-1613) was a Rabbinic scholar, historian, and astronomer. A student of Rabbi Moshe Isserles and the Maharal of Prague, he collaborated actively with Tycho Brahe and Johannes Kepler and left behind important scholarly works. Click here for the Prezi. Share this:TwitterTumblrFacebookLinkedInEmailRedditLike this:Like Loading...