Monday, March 14, 2011

Moon to get ‘up, close and personal’ with earth!

On March 19, 2011 the Moon will pass by Earth at a distance of 356,577 kilometers - the closest pass in 18 years.

This is known as lunar perigee and a normal lunar perigee averaging a distance of 364,397 kilometers (226,425 miles) happens once every orbital period. The term "Supermoon" was coined by the astrologer Richard Nolle.
in short, Earth, Moon and Sun are all in a line, with Moon in its nearest approach to Earth.

The Supermoon occurred in 1955, 1974, 1992 and 2005 were amazing.

It is a scientific fact that when the Moon is at perigee there is more gravitational pull, creating higher tides or significant variations in high and low tides.

In addition, the tidal effect of the Sun’s gravitational field increases the Moon’s orbital eccentricity when the orbit’s major axis is aligned with the Sun-Earth vector.

The average tidal bulge closely follows the Moon in its orbit, and the Earth rotates under this tidal bulge in just over a day. Generally Tidal forces contribute to ocean currents, which moderate global temperatures by transporting heat energy toward the poles.

It has been suggested that in addition to other factors, harmonic beat variations in tidal forcing may contribute to climate changes.

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