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Introduction

My project is about Pluto. It is the ninth planet from the sun and the smallest. Pluto is also the planet least known about, so in the following pages you will read the information gotten by scientists over the last years.

Pluto¡¦s Characteristics and Discovery
Pluto as you already must know is the ninth planet and the smallest. Its surrounded by only a thin atmosphere and has a solid, icy-rock surface. Pluto is the smallest planet and yet smaller than seven moons: Ganymede, Titan, Callisto, Io, Earth¡¦s moon, Europa and Triton. Its diameter is about eighteen percent that of Earth. Pluto¡¦s mass and diameter could only be estimated for many decades after its discovery. Pluto¡¦s thin atmosphere is most likely nitrogen and carbon monoxide, in equivalent with solid nitrogen and carbon monoxide ices on the surface. The atmosphere is also similar to that of Neptune's moon Triton. On Triton there are seasons and winds. Because Pluto has a bigger atmosphere than......

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Approximate Word Count: 653
Approximate Pages: 3 (250 words per double-spaced page)

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