CAPE CANAVERAL, Fla. — Get ready for a rare double feature, starring our very own moon.

A total lunar eclipse will share the stage with a so-called supermoon Sunday night or early Monday, depending where you are. That combination hasn’t been seen since 1982 and won’t happen again until 2033.

When a full or new moon makes its closest approach to Earth, that’s a supermoon. Although still about 220,000 miles away, this full moon will look bigger and brighter than usual. In fact, it will be the closest full moon of the year, about 30,000 miles closer than the average distance. (The moon’s orbit is far from a perfect circle.)

The full eclipse of the moon will last more than an hour and be visible, weather permitting, from North and South America, Europe, Africa and western Asia. Showtime on the U.S. East Coast is 10:11 p.m.; that’s when the moon, Earth and sun will be lined up, with Earth’s shadow darkening the moon.

There won’t be another total lunar eclipse until 2018.

This eclipse marks the end of a tetrad, or series of four total lunar eclipses set six months apart. This series began in April 2014.

The 21st century will see eight of these tetrads, an uncommonly good run. From 1600 to 1900, there were none.

Observatories are marking the celestial event with public telescope viewing, although magnifying devices won’t be necessary. Astronomers are urging stargazers to simply look to the east.


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