Death From The Skies

Philip Plait, Viking/Penguin, Multco 520 P698D 2008

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