IAU definition of planet who had theorized on the existence of the large trans-Neptunian object Planet X, and Tombaugh been searching for Planet X when he found Pluto. Almost immediately after its discovery, however, astronomers questioned whether Pluto could be Planet X. Willy Ley wrote a column in 1956 titled "The Demotion of Pluto", stating that it "simply failed to live up to the advance publicity it received as 'Planet X' before its discovery. It has been a disappointment all along, for it did not turn out to be what one could reasonably have expected". In 1978, Pluto's moon Charon was discovered. By measuring
The Adventures of Pluto Nash famous intergalactic singer. While in an elevator he stalled, Pluto asks Tony if there is a way up to Rex Crater's penthouse. Pluto is told that the only way is to climb up via the elevator ropes. When they leave the elevator after Pluto asks about a Plan B, Rex's assistant Belcher (James Rebhorn) and some men attack. They knock Tony out while Pluto is stunned, which was Belcher's version of "Plan B". Meanwhile, Dina approaches the security guard at the place where the robots are locked up. When the guard tells Dina that the repairs on the robot slot