Lunar eclipse

Lunar eclipse

A lunar eclipse occurs at what time the moon passes at the rear the earth so that the earth blocks the sun's rays from outstanding the moon. This can take place only when the Sun, Earth, and Moon are aligned exactly, or very closely so, with the Earth in the middle. Hence, there is always a full moon the night of a lunar conceal. The type and length of an eclipse depend upon the Moon's location relation to its orbital nodes. The most recent total lunar conceal occurred on December 21, 2010, at 08:17 UTC. The next total lunar conceal on June 15, 2011 will be a central hide, visible over Europe and south America after sunset, over Africa and most of Asia, and Australia before sunrise.
Unlike a solar hide, which can only be seen from a certain relatively small area of the world, a lunar conceal may be considered from anywhere on the night side of the Earth. A lunar conceal lasts for a few hours, whereas a total solar hide lasts for only a few notes at any given place. Some lunar eclipses have been associated with significant historical events.