Many "Earths" Are Out There, Study Says
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- Original Source:Xpeditions
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In this National Geographic News article, read about a study that says half of the known planetary systems outside our solar system could harbor Earthlike planets. Scientists believe it is possible for such planets to harbor life, if they remain in a habitable zone that is not too hot, and not too cold. Links to related stories and Web sites are also found on this page.
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Grade: 3 to 12
Topics: American Democracy, Geography, Science, History-Social Science, Earth & Space Science
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