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Are We Alone in the Universe?

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Science  01 Jul 2005:
Vol. 309, Issue 5731, pp. 88
DOI: 10.1126/science.309.5731.88

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Summary

Alone, in all that space? Not likely. No, the really big question is when, if ever, we'll have the technological wherewithal to reach out and touch such intelligence. With a bit of luck, it could be in the next 25 years.

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