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provides lessons, video clips, and interactive resources for learning about the origin and evolution of the universe, the composition of the universe, earth in the solar system, the physical composition of the solar system, conditions necessary for planetary life, satellites and space research, and solar energy. (Teachers' Domain, Multiple Agencies)
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As far as we know, only one planet has life on it -- Earth. But is it really possible that our planet is the only life-bearing planet in the entire universe? Some scientists believe that extraterrestrial life does exist, and some even believe that there may be advanced alien life. |
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Telescopes on Mauna Kea |
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