Sunday will be last chance to see a Super Blood Moon until 2033

Flickr: NASA's Marshall Space Flight Center

For the first time in more than 30 years, you can witness a supermoon in combination with a lunar eclipse. Late on Sept. 27, 2015, in the U.S. and much of the world, a total lunar eclipse will mask the moon’s larger-than-life face.

Watch NASA’s live stream from 8:00 p.m. until at least 11:30 p.m. EDT broadcast from Marshall Space Flight Center in Huntsville, Ala., with a live feed from the Griffith Observatory, Los Angeles, Calif. Mitzi Adams, a NASA solar physicist at Marshall will discuss the eclipse and answer questions from Twitter. To ask a question, use #askNASA.

Throughout human history, lunar eclipses have been viewed with awe and sometimes fear. Today, we know that a total lunar eclipse happens when the full moon passes through the darkest part of Earth’s shadow, the umbra.

Sunday’s supermoon eclipse will last 1 hour and 11 minutes, and will be visible to North and South America, Europe, Africa, and parts of West Asia and the eastern Pacific. Weather permitting, you can see the supermoon after nightfall, and the eclipse will cast it into shadow beginning at 8:11 p.m. EDT. The total eclipse starts at 10:11 p.m. EDT, peaking at 10:47 p.m. EDT.

The moon does not make its own light; it reflects light it receives from the sun. During a lunar eclipse, the moon appears less and less bright as sunlight is blocked by the Earth’s shadow. As totality approaches, sunlight reaches the moon indirectly and is refracted around the “edges” of Earth, through Earth’s atmosphere. Because of this, almost all colors except red are “filtered” out, and the eclipsed moon appears reddish or dark brown. This filtering is caused by particulates in our atmosphere; when there have been a lot of fires and/or volcanic eruptions, lunar eclipses will appear darker and redder. This eerie — but harmless — effect has earned the phenomenon the nickname “blood moon.”

The live feed from NASA’s Marshall Space Flight Center will offer views of the eclipse from not only the Griffith Observatory, but the Adler Planetarium in Chicago, Fernbank Observatory in Atlanta and other locations across the United States. The live feed is an alternative for those experiencing less-than-optimal weather or light-polluted night skies.

If you miss this event, you’ll have to wait a while — the next supermoon eclipse won’t occur until 2033.

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