The Summer of Supermoons



Two perigee full moons appeared in the sky this summer, one on 12 July and one on 10 August, and a third will appear on 9 September. Perigee is the moment the Moon passes closest to the Earth. Although the appearance of these moons is not extraordinary—they occur, on average, between four and six times per year—the 10 August moon was the brightest and closest of all the perigee moons that will appear this year.