NASA’s New Horizons spacecraft makes historic flyby around Pluto

In the early 1900’s, after the discovery of Neptune, scientists began making calculations for something else that appeared to be affecting the movements of the two outer planets. In 1930, Clyde Tombaugh discovered the long-hypothesized planet now called Pluto; after continuing the research of Percival Lowell, who originally suspected the planet’s existence but unfortunately died…