Requirements_of_Life

Requirements_of_Life - Requirements for Life Stephen...

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Requirements for Life Stephen Eikenberry 28 Sep 2010 AST 2037 1
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2 Life: What is it? Things with the ability to reproduce AND the ability to evolve and adapt Why both of these? Flames can spread or “reproduce”, but they aren’t alive Crystals (i.e. salt) can also spread or grow, but they aren’t alive either Only living things evolve – meaning develop adaptations to their environment that improve their ability to continue 2
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Implications Need: an energy source Something to power the “doing” of things Including reproduction Need: means of reproduction Access to material components of life Way of passing on the information about the structure of life (“genetic code”) 3
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Want something easy to make, easy to store, capable of making things happen in a “typical” environment Options: Nuclear energy? (Requires 10,000,000K and high pressure) Solar energy? (Hard to store light) Thermal energy? (tends to “leak” out; hard to store) Kinetic energy? (hard to store) Chemical energy? Works!! 4
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Requirements_of_Life - Requirements for Life Stephen...

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