1. The problem statement, all variables and given/known data The energy reaching Earth from the Sun at the top of the atmosphere is 1.36x10^3 W/m^2, called the solar constant. Assuming that Earth radiates like a blackbody at uniform temperature, what do you conclude is the equilibrium temperature of Earth? 2. Relevant equations Stefan-Boltzmann law: R=[tex]\sigma[/tex]T^4, Wein's displacement law: ([tex]\lambda[/tex]max)T=2.898x10^-3 mK 3. The attempt at a solution I know that the Earth radiates the same amount of energy it takes in if it is acting as a black body, but I am stuck at figuring out how much energy the Earth is actually absorbing from the sun. If I can figure that out I know what to do with the rest of the problem.