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Minor Lunar Eclipse to Grace Night Sky This Week - 

The moon will dive through Earth's shadow Friday evening (Oct. 18) in a lunar eclipse that will be visible to sharp-eyed skywatchers in much of the world.

Earth's natural satellite will pass through our planet's faint outer shadow, known as the penumbra, on Friday, with the time of deepest eclipse occurring at 7:50 p.m. EDT (2350 GMT). The effect of such a "penumbral eclipse" will be subtle compared to the dramatic spectacle of a total lunar eclipse, but it's still worth craning your neck skyward, experts say.

"Unusual shading on the southern half of the moon should be fairly plain," Sky and Telescope's Alan MacRobert wrote on Sunday (Oct. 13). "Look for the penumbral shadow to move from (celestial) east to west across the disc. You might be able to detect lesser traces of penumbral shading for about 45 minutes before and after mid-eclipse."

Weather permitting, observers in the eastern half of North America should get a good view of the eclipse. People in the Mountain and Pacific time zones won't be so lucky, however; for them, the deepest phase will occur in the late afternoon hours, before the moon rises. The striking penumbral lunar eclipse photos here show what the moon can look like during the event. ...more

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