Stephen Sekula

Stephen Sekula at

Because brightness (in this case, of reflected sunlight) goes as the square of the distance, the moon can appear up to 30% brighter during supermoon even thought it is only 14% bigger, compared to apogee (when it is farthest from Earth). Math FTW! https://twitter.com/drsekula/status/937473111108222977/photo/1