We have never traveled outside of our own solar system. A solar system is a group of planets that rotate around one or more stars. Scientists think that there are many solar systems like ours. Our own solar system has nine planets in it; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. To learn more about these planets, click on the planet below: |
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Text Links: Mercury »Mercury Fact Sheet Venus »Venus Fact Sheet Earth »Earth Fact Sheet Mars »Mars Fact Sheet Jupiter »Jupiter Fact Sheet Saturn »Saturn Fact Sheet Uranus »Uranus Fact Sheet Neptune »Neptune Fact Sheet Pluto »Pluto Fact Sheet  movies | parts of our site | library/gallery | planetarium how to use | help | search | site map home © 1999 ThinkQuest Team 25763. All rights reserved. |