Also unlike solar eclipses, lunar eclipses are safe to view without any eye protection or special precautions, as they are dimmer than a normal full Moon. A total lunar eclipse can last up to nearly 2 hours, while a total solar eclipse lasts only up to a few minutes at any given place, because the Moon's shadow is smaller. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. This light appears reddish for the same reason that a sunset or sunrise does: the Rayleigh scattering of blue light. The reddish color of a totally eclipsed Moon is caused by Earth completely blocking direct sunlight from reaching the Moon, with the only light reflected from the lunar surface has been refracted by Earth's atmosphere. The type and length of a lunar eclipse depend on the Moon's proximity to the lunar node. This can occur only when the Sun, Earth, and Moon are exactly or very closely aligned (in syzygy) with Earth between the other two, which can happen only on the night of a full moon when the Moon is near either lunar node. Latter phases of the partial lunar eclipse on 17 July 2019 taken from Gloucestershire, United KingdomĪ lunar eclipse occurs when the Moon moves into the Earth's shadow.
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