I’m going to come right out and ask the burning question: Is Pluto a Planet? No. At least under the current definition.  So the question becomes “Should Pluto be a planet?”  That answer is a bit more complicated.  Let’s look at the history.   Discovered by Clyde Tombaugh in 1930, Pluto was initially considered the ninth planet of our Solar System.  It was part of an intense search that follows back all the way to the discovery of Uranus and the orbital calculations that led to the discovery of Neptune.  Even after Neptune’s discovery, gravitational perturbations pointed to a ninth planet,...