- published: 28 Sep 2015
- views: 815257
A lunar eclipse occurs when the Moon passes behind the Earth so that the Earth blocks the Sun's rays from striking the Moon. This can occur only when the Sun, Earth, and Moon are aligned exactly, or very closely so, with the Earth in the middle. Hence, a lunar eclipse can only occur the night of a full moon. The type and length of an eclipse depend upon the Moon's location relative to its orbital nodes. Unlike a solar eclipse, which can only be viewed from a certain relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of the Earth. A lunar eclipse lasts for a few hours, whereas a total solar eclipse lasts for only a few minutes at any given place, due to the smaller size of the moon's shadow. Also unlike solar eclipses, lunar eclipses are safe to view without any eye protection or special precautions, as they are no brighter (indeed dimmer) than the full moon itself.
The shadow of the Earth can be divided into two distinctive parts: the umbra and penumbra. Within the umbra, there is no direct solar radiation. However, as a result of the Sun’s large angular size, solar illumination is only partially blocked in the outer portion of the Earth’s shadow, which is given the name penumbra. A penumbral eclipse occurs when the Moon passes through the Earth’s penumbra. The penumbra causes a subtle darkening of the Moon's surface. A special type of penumbral eclipse is a total penumbral eclipse, during which the Moon lies exclusively within the Earth’s penumbra. Total penumbral eclipses are rare, and when these occur, that portion of the Moon which is closest to the umbra can appear somewhat darker than the rest of the Moon.
09/27/2015 Supermoon Lunar Eclipse
Lunar Eclipse 2011 Amazing! Next Lunar Eclipse Video Will turn moon BLOOD RED like this!!
What's the difference between a solar and lunar eclipse?
Supermoon lunar eclipse: September 27 to see rare blood supermoon and lunar eclipse - TomoNews
Solar and lunar eclipses, explained | Observatory #3
NASA | Supermoon Lunar Eclipse
Lunar Eclipse | The Dr. Binocs Show | Learn Series For Kids
LUNAR ECLIPSE in LIBRA | DO YOU LOVE ME?
NASA | Lunar Eclipse Essentials
What is a Supermoon Lunar Eclipse in 60 Seconds
NASA | Understanding Lunar Eclipses
Super Blood Harvest Moon Lunar Eclipse Sept 2015
Cause of the Solar/Lunar Eclipse (Another Theory on the Flat Earth)
Lunar Eclipses