The Planet Neptune |
Today in Astronomy History February 9, 1497 February 9, 1971 February 9, 1986 February 9, 1986 ...also in Astronomy Today February 9, 2010 February 9, 2010 | Welcome to Planet Neptune Named after the Roman god of the sea, Neptune is a gas giant which is visable to telescopic viewing. The existence of Neptune was mathmatically predicted by Urban Le Verrier in 1846 and was discovered on September 23, 1846 by James Challis with 1° of the position predicted by Le Verrier. |