How to watch the rare streak of 3 supermoons happening back-to-back
(Learn about the eight moon phases.) When a full moon coincides with the time of perigee, we get a supermoon—a lunar disk that appears slightly larger and shines more brightly than usual. Compared with the farthest full moon, a supermoon can appear up to 14 percent bigger and 30 percent brighter. Against an average full … Read more