The March 20, 2015 supermoon is a new moon, and it causes a total eclipse of the sun.
This year has a total of six supermoons. They are the new moons of January, February and March and the full moons of August, September and October.
The name supermoon was coined by astrologer Richard Nolle over 30 years ago. It was popularized and came to be an accepted term only in the past few years. Richard Nolle has defined a supermoon as: “… a new or full moon which occurs with the moon at or near (within 90% of) its closest approach to Earth in a given orbit.”
The closest full supermoon will be in September, 2015.
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