Eclipse

The Total or partial blocking of light of one heavenly body by another.. Solar Eclipse occurs when the Moon is between Sun and Earth. Lunar Eclipse occurs when the Earth is between Sun and Moon, thus blocking light. A Solar Eclipse can only take place when there is a conjunction of Sun and Moon at new moon, and when they are parallel in declination and within 9 degrees of the Moon's Nodes. A Lunar Eclipse can only take place when the Sun and Moon are in opposition, at full moon, contra-parallel and within 9 degrees of the Moon's Nodes.The Total or partial blocking of light of one heavenly body by another is called an Occulation.