Pluto

Clyde Tombaugh found Pluto at Lowell Observatory while searching for Lowell's Planet X.

Pluto proved far too small to be Planet X; the IAU reclassified it as a dwarf planet in 2006. Its surface here is procedural, not a map.

Sources

1. Wikipedia: Planets beyond Neptune
2. IAU 2006 Resolution B5 (definition of a planet)

13point8 is an independent educational project. Every fact links to its source; send corrections to [email protected]. Privacy