There is real joy in multiplying the Sun's surface temperature, raised to the 4th power, by the Stefan-Boltzmann constant; or dividing the power output of the sun by its surface area; then seeing for yourself those numbers are nearly identical. Thank-you, nature. https://twitter.com/drsekula/status/1106319892469436422/photo/1 https://chirp.cooleysekula.net/attachment/55937