= Death From The Skies =
=== Philip Plait, Viking/Penguin, Multco 520 P698D 2008 ===
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Purchased $1 Used 2016/07

Mostly about the ways the world '''won't''' end.
 * Supernovae:  < 1 LY to be brighter than sun, 25 LY for gamma rays destroying ozone and UV destroying life (out ouf date?)
 * Solar overheat: 1.1 GY
 * The End of Everything:  Stelliferous Era, 4e8 to 1e15 years
  * 1e12 only red dwarfs remain, lasting 1e13 years