A supermoon occurs when a full moon coincides with the moon reaching its closest distance—a point known as perigee that’s about 226,000 miles away—from the Earth in its 27-day orbit, though NASA does not recognize it as an official astronomical term.
A supermoon occurs when a full moon coincides with the moon reaching its closest distance—a point known as perigee that’s about 226,000 miles away—from the Earth in its 27-day orbit, though NASA does not recognize it as an official astronomical term.