Monday, August 4, 2008

Plutoo

Some thing i found

Pluto

1. Pluto moved closer to the sun than Neptune.

2. Pluto is the only planet that has not been visited by a spacecraft.

3. Every 248 years the two planets swap places and for about 20 years Pluto becomes the eighth planet and Neptune the ninth.

4. Pluto's own moon, Charon, is larger in proportion to its planet than any other satellite in the solar system.

5. It's 6 times smaller than Earth, and even smaller than seven of the solar system's moons.

6. It is the only planetary orbit which crosses that of another planet (Neptune), and it is tilted 17 degress
7. With respect to the plane of the solar system.

8. All the other rocky planets -- Mercury, Venus, Earth and Mars -- are located in the inner solar system, close to the Sun. Except for Pluto, all of the outer planets -- Jupiter, Saturn, Uranus and Neptune -- are gaseous giants.


9. No one knows, and the mystery may remain until some future spacecraft pays a visit to this distant planet.

10. Astronomers once thought that Pluto may have been a satellite of Neptune's that was ejected to follow a tilted elliptical path around the sun.

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