Welcome to Wikipedia. Everyone is welcome to contribute to the encyclopedia, but when you add or change content, as you did to the article Extraterrestrial life, please cite a reliable source for the content of your edit. This helps maintain our policy of verifiability. Take a look at Wikipedia:Citing sources for information about how to cite sources and the welcome page to learn more about contributing to this encyclopedia. You may also want to check out our neutral point of view policy, and this section of the essay "What Wikipedia is not," which explains that Wikipedia does not speculate but simply reports what is sourced. Ian.thomson (talk) 17:55, 1 August 2010 (UTC)
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