Both lunar and solar eclipses can only occur when the Earth, Sun and Moon are directly aligned.This is again about to happen just four days before Christmas.Starting at 1:33 a.m. on Tuesday, Dec. 21, the moon will pass through Earth’s shadow, creating a 72-minute window where the moon will be glowing red on the longest night of the year.
NASA says the moon will be in its deepest shadow at 3:17 a.m., and will display its most pronounced reddish hue at that time. It will fully re-emerge from the shadow of the Earth at 5:01 a.m.
NASA has also rolled out a range of activities and features, including live web chats, a text message sign up campaign to receive text reminders, and a Flickr group devoted to amateur and professional photographers capturing the action.
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