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Discovered
The planet pluto was discovered by Clyde Tombaugh -
First Moon Discovered
In 1978 it was discovered that Pluto had a moon nearly half its size Charon. -
pioneer spaceship crossed the orbit
The Pioneer 10 spacecraft crossed Pluto's orbit, speeding on its endless voyage through the Milky Way. -
Two new Moons
2005 pluto had two more moons Nix and Hydra -
New Horizons spacecraft
NASA launched its New Horizons spacecraft on a mission to Pluto following a 2-day delay. Scientists won't be able to receive data on Pluto until at least July 2015, the earliest date the mission is expected to arrive. -
UD13 is larger than pluto
The journal Nature reported that object UB313 is larger than Pluto according to German heat calculations. -
Planet no more.
2006 it was declassified as a planet. -
The Fourth Moon
In 2011 the fourth moon P4 was discovered.