Editing Eclipse (section)

===Lunar eclipse===
{{main|Lunar eclipse}}Lunar eclipses occur when the Moon passes through the Earth's shadow. This happens only during a [[full moon]], when the Moon is on the far side of the Earth from the Sun. Unlike a solar eclipse, an eclipse of the Moon can be observed from nearly an entire hemisphere. For this reason it is much more common to observe a lunar eclipse from a given location. A lunar eclipse lasts longer, taking several hours to complete, with totality itself usually averaging anywhere from about 30 minutes to over an hour.<ref>{{cite web
 |author      = Staff
 |date        = January 6, 2006
 |url         = http://www.crh.noaa.gov/fsd/astro/suneclipse.php
 |title       = Solar and Lunar Eclipses
 |publisher   = NOAA
 |access-date  = 2007-05-02
 |url-status     = live
 |archive-url  = https://web.archive.org/web/20070512191007/http://www.crh.noaa.gov/fsd/astro/suneclipse.php
 |archive-date = May 12, 2007
}}</ref>

There are three types of lunar eclipses: penumbral, when the Moon crosses only the Earth's penumbra; partial, when the Moon crosses partially into the Earth's [[umbra]]; and total, when the Moon crosses entirely into the Earth's umbra. Total lunar eclipses pass through all three phases. Even during a total lunar eclipse, however, the Moon is not completely dark. Sunlight refracted through the Earth's atmosphere enters the umbra and provides a faint illumination. Much as in a sunset, the atmosphere tends to more strongly scatter light with shorter wavelengths, so the illumination of the Moon by refracted light has a red hue,<ref>
{{cite web |last=Phillips |first=Tony |date=February 13, 2008 |url=https://science.nasa.gov/headlines/y2008/13feb_lunareclipse.htm |title=Total Lunar Eclipse |publisher=NASA |access-date=2008-03-03 |url-status=dead |archive-url=https://web.archive.org/web/20080301221225/http://science.nasa.gov/headlines/y2008/13feb_lunareclipse.htm |archive-date=March 1, 2008 }}</ref> thus the phrase 'Blood Moon' is often found in descriptions of such lunar events as far back as eclipses are recorded.<ref>Ancient Timekeepers, {{cite web |url=http://blog.world-mysteries.com/science/ancient-timekeepers-part-1-movements-of-the-earth/ |title=Ancient Timekeepers, Part 1: Movements of the Earth |access-date=2011-10-25 |url-status=live |archive-url=https://web.archive.org/web/20111026041145/http://blog.world-mysteries.com/science/ancient-timekeepers-part-1-movements-of-the-earth/ |archive-date=2011-10-26 |date=2011-09-16 }}</ref>