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Our Solar System Lithograph

2 pages
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Best when printed on 8 1/2 x 11 paper.

Most recent update: 10 Sep 2013

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Our Solar System - 931 KB PDF File

Our solar system formed about 4.6 billion years ago. The four planets closest to the Sun - Mercury, Venus, Earth, and Mars - are called the terrestrial planets because they have solid, rocky surfaces. Two of the outer planets beyond the orbit of Mars - Jupiter and Saturn - are known as gas giants; the more distant Uranus and Neptune are called ice giants.

Note: This lithograph was revised in September 2013.

For the most recent planetary science developments, visit our Planets section.

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Last Updated: 10 Sep 2013