Eerie 'Super Worm Moon' Will Illuminate the Night Sky on March 20

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And the opportunity to watch a Full Moon rise when the equinox makes this Super Worm Equinox Moon particularly special. This was known as a "super snow moon". The Old Farmer's Almanac reports that the full moon in March is always known as the "worm moon" because it marks the time of year when earthworms begin to come out in the soil.

The third and final supermoon of 2019 is set to be seen on Wednesday, just ahead of the official start of spring in the U.S. The two events have not taken place so closely together since 2000 and have not occurred on the same date since 1981.

AccuWeather reports the next supermoon isn't set to rise until february 9, 2020.

Although a supermoon does not appear bigger than an average moon to the human eye - except when it looms near the horizon - it does tend to appear brighter.

It will be the last of a trio of supermoons that kicked off the first three months of 2019. Perigee happens because the moon's orbit is not a ideal circle, so there are times when it is relatively close to us on Earth and other times when it is comparatively far away.

The word "super" is used to designate when the full or new moon is closest to Earth in its orbit, making it appear larger and brighter than usual. Higher-than-normal tides and some coastal flooding also are frequent concerns during a perigee moon.

According to NASA, the super moon will only be visible for a few hours this Wednesday and should appear "slightly larger" in the sky.

In the Washington region, the full moon rises in the eastern sky at 7:02 p.m. Wednesday, shortly before sunset at 7:19 p.m. Clear skies are expected.

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