19th march 2011 the moon will make its closest approach to Earth in after almost 20 years, say experts.According to them, the astronomical event — "extreme supermoon" — may trigger earthquakes, volcanic eruptions and other disasters. An "extreme supermoon " occurs when the Earth’s natural satellite reaches its absolute closest point. On March 19, the moon will be only 221,556 miles away – the first extreme super-moon in nearly 20 years.Previous supermoon – or "lunar perigees" – happened in 1955, 1974, 1992 and 2005.
