Earth


source: nasa
Earth I the planet that we all live on. Also Earth I is the only planet which name is doesn't derive from Greek/Roman mythology and the only astronomical object known to have life in it.


Earth profile

Type  - inner planet
Mean radius - 6,371.0 km (3,958.8 mi)
Equatirial radius - 6,378.1 km (3,963.2 mi)

Atmosphere


Earth's atmosphere is consist of varieties of gases.78.08% of nitrogen 20.95% of oxygen,0.1% of water vapour, 0.934% of argon,0.04% of carbon dioxide ,0.00182 neon, 0.00052 helium ,0.00017% of methane, 0.00011% Krypton and 0.00006% of hydrogen.

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