Astronomers on a planet orbiting 1.500 AU from a star measure the irradiance at the top of their atmosphereas 1700 W/m?. Assume that the irradiance includes all types of radiation produced by the star and that it isemitted isotropically (same in all directions) by the star so that the inverse square law of irradiance can beapplied. The current mass of the star is know to be twice the mass of our Sun and that 0.100% of its currentmass will be available for hydrogen fusion to helium in the core of the star. What is the current rate of massconversion in kg/s occurring in the core of the star?Given: 1 AU = 1.495978707 x 10"1 meters, M = 1.989 x 103° kg, c= 2.9979 x 10° m/saunIf the star continues to "burn" mass at this same rate, how longwill it be in Earth years until the star runs out of hydrogen fuel in it's core?

Given The intensity is I=1700 W/m2 The radius is r=1.5 AU Current mass of the star,…

Answered: Astronomers on a planet orbiting 1.500…

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