Topic: Clyde Tombaugh
Neptune has come almost full circle since it was first discovered in 1846, and on Aug. 20, it will be in a straight line with the sun and the Earth.
08/19/2010 07:37 pm
Ceres and Pluto will come into opposition with the sun, offering a rare view of these two dwarf planets.
06/17/2010 01:40 pm
A lively account of the ‘exile’ of Pluto, everyone’s favorite ex-planet.
01/27/2009 12:00 am