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Science, Evolution, and Creationism, by the National Academies, focuses on teaching evolution in today's classrooms. Check out the other publications in our online store.
This is an image of Pluto compared with that of the Earth.
Image from: NASA

A Comparison of Pluto and the Earth.

This is an image of Pluto compared with that of the Earth. Pluto, the outermost planet in the solar system, is the smallest planet in the solar system, much smaller than Earth, and probably made of ice. The table below gives a comparison of characteristics of Pluto relative to Earth values.

Characteristic Relative to Earth
(Earth = 1)
Absolute Value
Mass 0.0022 1.29x10**25
Radius 0.18 1,150 km (?)
Mean Density ----- 2 g/cm**3 (?)
Rotation Period 6.8 Earth days -----
Mean Orbital
Distance
39 AU 5,9130 x 10**9 km
3 billion miles
Orbital Period 248 Earth years -----
Orbital eccentricity ----- 0.248
Inclination to
ecliptic (degrees)
----- 17.14
Temperature ----- -350F

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The Moons of Pluto

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Pluto

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Pluto's Interior

The diagram to the left shows what the inside of Pluto may look like. Pluto is mostly made of ice, with a small core of some rocky material buried inside. If the interior is warm enough, the inside of...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF