Planet Pluto |
Today in Astronomy History March 10, 1977 March 10, 2006 | Welcome to The Planet Pluto Website Pluto is usually the ninth planet from the Sun although it is sometimes 8th when Pluto moves within Neptune's orbit. Pluto's diameter is 2,300 km and takes 249 years to orbit the Sun. Pluto is named after the Roman god of the underworld. Pluto was discovered on February 18, 1930 by Clyde Tombaugh. |
