Ashes to X

Clyde Tombaugh's ashes are on their way to Pluto.

Tombaugh, who died in 1997, discovered Pluto on February 18, 1930, while searching the skies for what forecast to be "a trans-Neptunian planet (also called Planet X), which had been predicted by Percival Lowell and William Pickering."

If you're into the details about the century-long search for Planet X, click here.