-Born in 276 BC in Cyrene and died 194 BC in Capital of Ptolemaic Egypt.
-Poet, Librarian, Scholar, Inventor.
-First person to calculate the circumference of the earth by measuring the altitude of the noontime sun, the difference in the zenith angle and geometry.
-First person to prove that the earth was round.
-Possibly calculated the accurate distance from the sun to earth
-Created Leap Day
- Has a period on the lunar geologic timescale, a crater on the moon, and a sea mount in the Mediterranean
sea, all named after him.
