Lunar eclipse
A lunar eclipse occurs when the Moon moves into the Earth’s shadow. 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. Unlike solar eclipses, lunar eclipses are safe to view without any eye protection or special precautions, as they are dimmer than the full Moon.
About Lunar eclipse in brief
A lunar eclipse occurs when the Moon moves into the Earth’s shadow. 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. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed anywhere on the night side of Earth. Unlike solar eclipses, lunar eclipses are safe to view without any eye protection or special precautions, as they are dimmer than the full Moon. A selenelion or selenehelion occurs when both the Sun and an eclipsed Moon can be observed at the same time. This can occur only just before sunset or just after sunrise, when both bodies will appear just above the horizon at nearly opposite points in the sky. Although the Moon is in Earth’s umbra, both the Moon and the Sun can be simultaneously seen because atmospheric refraction causes each body to appear higher than their true altitude. The timing of total lunar eclipse are determined by its scale: The following rating was devised by André Danjon for the following sky positions following the following eclipses.
There is often confusion between a solar and lunar eclipse because they involve different interactions between the Sun, Earth, and the Moon, and they are very different in their interactions. The Moon does not completely darken as it passes through the umbra because of the refraction of sunlight by Earth’s atmosphere. The reddish color arises because sunlight reaching the Moon must pass through a long and dense layer of Earth’s atmosphere, where it is scattered by small molecules. Shorter wavelengths are more likely to be scattered by air and small particles, thus the Moon would be completely dark during the eclipse. The only light reflected from the lunar surface has been refracted by Earth . This light appears reddish for the same reason that a sunset or sunrise does: the Rayleigh scattering of bluer light. The total time between the first and the last contacts of the Moon’s limb with Earth’sshadow is much longer and could last up up to 236 minutes.
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This page is based on the article Lunar eclipse published in Wikipedia (as of Dec. 01, 2020) and was automatically summarized using artificial intelligence.
