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Home Forums Observing and Imaging Group Why the Moon looks red in a total eclipse

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  • #11774
    Andy Sawers
    Moderator
    Topics: 134
    Replies: 604

    Well, I’ve heard the explanation for why the Moon looks reddish during a total lunar eclipse – but never quite this wonderfully, this graphically.

    What makes the eclipsed Moon turn red? A quick trip to the Moon provides the answer: Imagine yourself standing on a dusty lunar plain looking up at the sky. Overhead hangs Earth, nightside down, completely hiding the sun behind it. The eclipse is underway.

    You might expect Earth seen in this way to be utterly dark, but it’s not. The rim of the planet looks like it is on fire.

    As you scan your eye around Earth’s circumference, you’re seeing every sunrise and every sunset in the world, all of them, all at once.

    This incredible light beams into the heart of Earth’s shadow, filling it with a coppery glow and transforming the Moon into a great red orb.

    From http://www.spaceweather.com

    • This topic was modified 4 years, 8 months ago by Andy Sawers. Reason: typo
    #11777
    Brian Blake
    Participant
    Topics: 188
    Replies: 409

    There is a big event planned here in Recife, Brazil for the eclipse.

    #11779
    Andy Sawers
    Moderator
    Topics: 134
    Replies: 604

    Excellent. How’s the weather forecast?

    #11780
    Andy Sawers
    Moderator
    Topics: 134
    Replies: 604

    Wow. Just looked up Recife on Google. It’s only about 8 degrees south of the equator. Are you able to see the Large and Small Magellanic Clouds or is it the wrong time of year, Brian? Or too much light pollution?

    #11786
    Brian Blake
    Participant
    Topics: 188
    Replies: 409

    To much light pollution.

    #11787
    Brian Blake
    Participant
    Topics: 188
    Replies: 409

    Weather forecaste is good.

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