The Quest for Life

The Drake Equation: R ^* ×; ƒ _p ×; n _e ×; ƒ _ℓ ×; ƒ _i ×; ƒ _c ×; L =; N

The Universe: Yours to discover. International Year of Astronomy 2009

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Quest for Life by Steven Hammond is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.