Earth is almost round

Earth is almost round. Believe me - I've been around for a while and travel a lot, especially around Xmas time. The North Pole radius is 44mm longer than the South Pole radius, technically making earth a teeny weeny bit pear shaped. But basically earth is round.

In the 6th century BC Greek mathematician Pythagoras also said that earth is round - but few agreed with him. Greek astronomer Aristarchos said in the 3rd century BC that earth revolves around the sun - but the idea was not accepted by the scientists of the day. In the 2nd century BC Greek astronomer Erastosthenes accurately measured the distance around the earth at about 40,000 km (24,860 miles) - but nobody believed him, not a single one.

In the 2nd century AD Greek astronomer Ptolemy stated that earth was the center of the universe - most people believed him for the next 1,400 years. Now we know it's not true. You are the center of the universe. It was a typo.

I know. I was there. And if you still don't believe the round earth theory or know where the center of the universe is, check it out for yourself with google sky or NASA Observatory.