"SUMMIT COUNTY — About once a year, the moon, in its elliptical orbit, reaches its closest point to the Earth the same time as the full moon. This year’s so-called supermoon is this weekend, and skywatchers will be treated to a moon that appears 14 percent larger and 30 percent brighter than the average full moon.
At its perigee, the moon is about 30,000 miles closer to Earth then when it’s at its apogee, which explains why the so-called supermoon looks especially bright and large, especially at moonrise, when viewed against a foreground.
This year, the timing is almost perfect, as the moon reaches perigee at 9:30 p.m. on May 5, then becomes completely full just one minute later.
According to NASA, it may be hard to tell that the moon appears bigger than normal....."
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