1. The problem statement, all variables and given/known data A space probe carry an instrument that detects radiation in space, the area of the probe is ##5000 \, cm^2## and its collecting data for 10 minutes. The information sent back to earth is given from this image below, how much radiation energy is it for 10 minutes? (frequency on the x-axis) 2. Relevant equations Plancks radiation law? Maybe? 3. The attempt at a solution I have no idea how to approach this problem, the answer is ##10-50 \, MJ## but I have no hints or anything so I'm lost. Been playing around with the dimensions a bit but its pretty much just guessing. Any hints?