Lunar eclipse | Eclipse | Moon The July 27 Blood Moon will be the longest total lunar eclipse of the 21st century. Both will be total lunar eclipses, when the full moon passes through Earth's shadow. Lunar eclipses are visible from anywhere on Earth where it is night time. Phase of the moon At such times, Earth's shadow falls on the full moon, causing a lunar eclipse. A solar eclipse happens at the opposite phase of the moon – new moon – when the moon passes between the sun and Earth. Lunar eclipses are visible from anywhere on Earth where it is nighttime. However, the duration of the eclipse you see will depend on how close to moonrise or moonset the eclipse starts in your location. During total lunar eclipses, the moon turns a deep red color when it enters the depths of Earth's shadow. So why doesn't the moon just look like it's in darkness? The color change happens because Earth's atmosphere acts as both a lens and a scattering...
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