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To help compare different orders of magnitude we list here energies between 1039 joules and 1042 joules. Weaker energies 3.6 × 1039 J -- 1024 TWh 1.2 × 1040 J -- energy output of the Sun in a million years 5.37 × 1041 J -- Theoretical total mass-energy of the mass of the Earth Stronger energies External link Conversion Calculator for Units of ENERGY (http://www.ex.ac.uk/cimt/dictunit/ccenrgy.htm)