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average distance between the Earth and the sun; approximately 150 million kilometers (AU)
planets that have deep, massive atmosheres rather than hard rocky sufaces. Jupiter, Saturn, Uranus, and Neptune
on this planet, you would only weigh 38% of what you weigh on Earth and a day on this planet would take 59 Earth days.
This planet is more like the Earth than any other planet; it is smaller, less massive and less dense than Earth.
appears to spin in a counterclockwise direction when it is viewed from above the North Pole
right distance from the sun
_________________ allowed Earth to prevent water from freezing or from boiling away
icy particles that range in size from a few centimeters to several meters -- usually surround gas giants
discovered by English amateur astronomer William Herschel in 1781, this planet is tipped over on its side
sometimes called the mystery planet, this is the farthest planet from the sun and the smallest planet
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