• Question: how much does the sky weight

    Asked by xxx_Sidtheultimateswaglord3000_xxx to Hephzi, Imogen, Tom on 19 Mar 2015.
    • Photo: Thomas Barrett

      Thomas Barrett answered on 19 Mar 2015:

      The Earth has a surface area of 197 million square miles. Multiply that by four billion to give you the number of square inches. With atmospheric pressure being an average 14.7 lbs (6.6kg) per square inch, this means that the sky weighs roughly 5.2 million billion metric tons.

    • Photo: Imogen Napper

      Imogen Napper answered on 19 Mar 2015:

      I never knew this!

      Awesome Tom!

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