Kepler, a space telescope for NASA, has recently doubled the number of exoplanets known to planet searchers. The mission has discovered a substantial number of planets within the goldylocks zone; not too hot and not too cold for liquid water. This zone is very restricted for each solar system, which makes the probability of finding planets within this potential habitable region small. Of the 1,235 exoplanets, Kepler has exposed 54 exoplanets within the goldylocks zone. I wonder what Johannes Kepler, the sixteenth century astronomer who determined that planets have elliptical orbits as opposed to circular, would think if he were told a mere half millennium later, astronomers would be finding hundreds of planets outside the only solar system known to man at the time. An article in The New York Times provides further information.