Earth

Etymology

eorðe - (eorthe) - Old English -> Earth

terra - (terra) - Latin -> Terra

γῆ - (ge) - Greek -> Gaia

Astrological symbol for Earth

Information

• 3rd Planet from the sun

• 4.5 billion years old, estimated

• The surface is 29% land and 71% water

• The atmosphere (air) is 78% Nitrogen and 21% Oxygen

• It takes 365.26 days to orbit around the sun, hence leap years

• It takes 24.9 hours to rotate on its axis

• The earth is tilted at 23.5 degrees