The earth: Now it's all going pear-shaped
Saturday 31st of July 2010 09:59:26 AM
Posted by admin / Under Pear
| The earth: Now it's all going pear-shaped American scientists say the earth has suddenly become fatter round the middle in the last four years. Like a pumpkin, the planet is a little bit wider around the equator than a perfect sphere would be. For 19 years its waistline shrank, but since 1998 it has been expanding, according to a study in the journal Science. Christopher Cox and Benjamin Chao noticed the bizarre phenomenon after studying space-based observations from the past 25 years. They found that a measurement of the Earth's width called J2, which excludes tidal effects, has generally been... |
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