Put another way, the uppermost edge of the moon will be just a mere 75 miles (120 kilometers) away from the indiscernible edge of the Earth’s umbra. 11), the penumbra will stretch across 98.84 percent of the lunar disk. In fact, at the moment of greatest eclipse (7:43 p.m. In this particular case, the moon is going to pass very deep into the penumbra. Penumbral lunar eclipses are rather subtle events that are usually difficult to detect unless at least 70 percent of the moon’s diameter is immersed within the shadow. Unlike total and partial lunar eclipses, the moon will stay outside the dark center of Earth's shadow, or the umbra, during this eclipse. You can also watch both of the broadcasts here on, courtesy of Slooh.ĭuring tonight's penumbral lunar eclipse, the moon will take 4 hours and 10 minutes to glide across the pale outer fringe of Earth's shadow, known as the penumbra. EST (2030 GMT) and be followed by " Cruise the Galaxy with Comet 45P" at 10:30 p.m. " The Full Snow Moon Eclipse" will air live views of the lunar eclipse at 5:30 p.m.
The online astronomy service will webcast two free shows related to the eclipse and the comet tonight. It will be visible all weekend, though it will be difficult if not impossible to spot without the help of binoculars or a telescope. Look for Comet 45P in the eastern sky before dawn or in the western sky after sunset. It will also be the closest comet encounter in over 30 years, so it's certainly a must-see for avid skywatchers.
While the comet has been visible for months, this weekend skywatchers will have the best possible view of the blazing space rock.
With a pair of binoculars or a small telescope, skywatchers can also catch a glimpse of a bright-green comet passing by Earth.Ĭomet 45P/Honda-Mrkos-Pajdušáková, which entered the media spotlight in December as the "New Year's Eve comet" when it first became visible, makes its closest approach to Earth on Saturday (Feb. 10), careful observers across parts of North America can watch a Full Snow Moon penumbral lunar eclipse.
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