We really dont know. It was discovered by whoever was living at that time. Could have been caveman.
caveman lived on earth.. and i dont think they would be so smart to actually know what they're standing on LOL
Planet Earth.
planent venus. the third planent from the sun.
A very small group of individuals who have contributed to the betterment of Planent Earth.
because its the only planent that can sustain life (eg water, oxegon)
Pluto.
Venus has the closest period of revolution to Earth, taking approximately 225 Earth days to complete one orbit around the Sun.
It just does cuz its cool
its a dwarf planent. but yes, its a rock.
in the earth, people discovered
i really dnt know sorry. lol
Uranus. Its axis' tilt is 80 degrees, or nearly.
No. The first person to look down discovered Earth.