A supernova's energy is often compared to the total energy output of the Sun over its lifetime.Using the Sun's current luminosity, calculate the total solar energy output, assuming a 1010year main-sequence lifetime.Using Einstein's formula E = mc? calculate the equivalent amount of mass, expressed inEarth masses. [Hint: The total energy output of the Sun over its lifetime is given by its currentluminosity times the number of seconds in a year times its ten billion-year lifetime; Week 5slide 4; mass of earth = 6x1024kg; c = 3x10®m/s. Your answer should be 200-300 Earthmasses.]

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