Off Topic — HabitableZone

Off Topic » in reply to re: Density altitude

re: The links
Johannes — (archived)

http://www.physlink.com/Education/AskExperts/ae158.cfm

There are radioactive elements in the atmosphere information is here

http://www.geocities.com/m_v_ramana/undergroundtests.htm

Some atmospheric molecules are escaping into space, information is here

http://science.nasa.gov/newhome/headlines/ast08dec98_1.htm

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