Revolution
|
Rotation
|
Radius
|
248.5 Earth years
|
6.4 Earth days
|
1,195 km
|
Distance From the Sun
|
Mass
|
Density
|
5,906,376,200 km
|
0.013 x 1027 grams
|
1.1 gm/cm3
|
Surface Temperature
|
Moons
|
Atmosphere
|
Scientists are not exactly sure what the temperature on Pluto is, but most
believe it is between -228° and -238°C
|
1: Charon
|
Nitrogen, methane and traces of carbon monoxide on the surface of Pluto thaw and rise to
form an atmosphere when the planet is near the Sun. As the planet gets further away from the Sun
this atmosphere freezes and fallest back to the surface of the planet.
|
Pluto is the only planet that was discovered by an American, Clyde W. Tombaugh
Clyde's discovered the planet on February 18, 1930.
During PASSPORT TO KNOWLEDGE'S LIVE FROM THE HUBBLE SPACE TELESCOPE project it was discovered that
Clyde was about to celebrate his 90th birthday. Teachers and students along with the P2K staff
decided to throw a big birthday celebration.
Pluto will remain the ninth planet from the Sun until September 2226 when it once again moves inside
Neptune due to its unusual orbit.