Energy required to
     Star          Mass (kg)     Radius (m)         blow it apart (J)
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     Sun          1.99 x 10^30   6.96 x 10^8           2.28 x 10^(41)


  core-collapse
   progenitor     2.99 x 10^31   4.87 x 10^9           7.35 x 10^(42)

  thermonuclear
   progenitor
  (white dwarf)   2.79 x 10^30   6.37 x 10^6           4.89 x 10^(43)


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