Siachen (Jammu Kashmir, India) is the world's largest non polar glacier, and thus is some times is referred as the third pole. It is 78 km long and 5400 m above sea level.

In 4000 BC Chinese astronomers record eclipse. Great Pyramids constructed in 2500 BC. 2000 BC lines of standing stones at Carnac and Stonehenge at Salisbury (near London) by megalithic observers.

Earth's magnetic North pole is near Ellef Ringnes island in Canada, while magnetic south pole is off the coast of Wilkes land.

Total solar eclipse of 1 Aug 2008 is visible from Greenland, N & C Asia. 22 July 2009 is visible from S Asia & C Pacific.

Of the planets, Jupiter has the strongest magnetic field. Jupiter is the planet with largest moon. Jupiter has most moons -39. It has the greatest average density and has deepest oceans.