What is a Supermoon? + more videos |

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Supermoon is a full or new moon that nearly coincides with perigee. Perigee is the moon's closest point to Earth in its monthly orbit. This results in a moon which appears larger than its usual size when observed from earth. The technical name for the same is perigee syzygy i.e. roughly straight line configuration of Earth, Moon and the Sun.
Some important information about supermoon:
The term supermoon is attributed to astrologer Richard Nolle.
Out of the possible 12 or 13 full or new moons each year, usually three or four may be classified as supermoons.
Supermoons do not cause natural disasters like earthquakes or volcanic eruptions.
Supermoons can cause larger-than-usual perigean spring tides. These tides are a few inches bigger than normal tides.
References:
en.wikipedia.org/wiki/Supermoon
earthsky.org/human-world/what...
en.wikipedia.org/wiki/Perigea...