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Moon Earth Mars Space

This Week's Total Lunar Eclipse Is the Longest of the Century (washingtonpost.com) 52

On July 27, the moon is set to glide through Earth's shadow to create a red total lunar eclipse for one hour and 43 minutes -- the longest such eclipse of the young century. Viewers in the United States will have to watch the eclipse online as they're on the wrong side of the world. "Folks in western Africa, part of Europe, the Middle East and India will only have to look up to the sky to catch the deep-copper-toned totality in person," reports The Washington Post. From the report: "What makes the upcoming one special is that it occurs at nearly the same time as the year's second-most-distant lunar apogee (the monthly moment when the moon is most distant from Earth) and the moon passes almost smack through the center of Earth's shadow," astronomer Geoff Chester of the Naval Observatory said. He continued: "This will make it the longest-duration total lunar eclipse of the century. It's also cool that [the eclipse] occurs on the night that Mars reaches opposition, so (for people on the other side of the world) you'll have a red moon six degrees north of the Red Planet." All eclipses belong to eclipse families called saros. In this case, this eclipse is part of Saros 139, and it is No. 38 in a family of 71 that started June 10, 1351. This saros will last until July 24, 2613, per NASA. While technically this will be the longest eclipse of the century, the two previous lunar eclipses in this series -- July 16, 2000 (No. 37, Saros 139) and July 6, 1982 (No. 36, Saros 139) -- lasted longer than this one. In fact, the July 16, 2000, lunar eclipse lasted about three minutes longer. But remember, astronomers count the year 2000 as part of the last century.

Throughout the Eastern time zone, according to NASA and the U.S. Naval Observatory, the lunar eclipse (penumbral phase) starts at 1:14 p.m. and partiality occurs at 2:24 p.m. Totality starts at 3:30 p.m., with the maximum totality at 4:21 p.m. Totality will end at 5:13 p.m., and the partial eclipse ends at 6:19 p.m. Everything is over by 7:28 p.m. Unfortunately, the moon will not have risen anywhere in the United States for viewing during this window.
If you're not able to watch it locally, you can tune to the Weather Channel app, the website Slooh, or TimeandDate.com. The NBC News streaming network is also showing the eclipse at 4 p.m. on July 27.
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This Week's Total Lunar Eclipse Is the Longest of the Century

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