TwistedSifter on MSN
Over 2,200 years ago, Eratosthenes calculated the circumference of Earth, and his math was almost totally accurate
Impressive, right?
Observations show the universe appears flat, yet its true size and global shape beyond the observable horizon may remain forever unknown.
Have you ever wondered what life would be like if Earth weren’t shaped like a sphere? We take for granted the smooth ride through the solar system and the seamless sunsets afforded by the planet’s ...
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