All the planets rotate anticlockwise, except one


Earth is the densest (5.515 g/cm3) planet in the solar system and the only one not named after a god. Earth orbits the sun at an average speed of 66,629 mph (107 229 km/h). One year on earth is 365.24 days long. One day is 23 hours, 56 minutes and 4,06 seconds long. The extra day in a leap year was introduced to compensate for the discrepancy in the Gregorian calendar.

It’s easy to remember the order of the eight planets with this line: My Very Eager Mother Just Served Us Nachos. The capital letters stand for the order of the planets, starting closest to the sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

And remember too, that earth is not completely round; it is slightly pear-shaped. The North Pole radius is 44mm longer than the South Pole radius.

01/13/2010. Category: science. Tags: , , .

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