Who Discovered Earth

Asking who discovered the Earth may seem like a silly question—but it isn’t. After all, what is there to discover, if the very first humans lived on the planet anyway? But while this is the case, it took some time before people actually recognized the Earth, the fourth one from the Sun in the Solar System and the only one known to have existing life, is a planet. This makes sense considering the various theories regarding the status of the Earth.

Before the claims of Nicolas Copernicus and the observations of Galileo Galilee, people believed that Earth is the center of the Solar System. This belief was pushed by Claudius Ptolemaeus, also known as Ptolemy. Ptolemy believed that the stars and the other planets orbited the Earth. Since the five classical planets were already discovered at that point, the Ptolemaic geocentric model had the order of Mercury, Venus, Mars, Jupiter, and Saturn correct. However, in his model, the Sun came after Mercury and Venus.

It was not until Nicolas Copernicus formulated the heliocentric cosmology that this was corrected, although no one really believed him at first. Here, he theorized that the center cannot be the universe’s center and that the Sun is the real center.

It was Galileo Galilee who proved the cosmology created by Copernicus thanks to his observations of the classical planets. Specifically, his observations that Jupiter had moons (in the Ptolemaic model, there was only one moon) and Venus had half-lit and full-lit phases became proof that the Sun is the Solar System’s center and that the Earth came after Mercury and Venus.

  • :)

    ure mama created the earth…

  • http://earth busboy

    who discovered earth

  • http://planetfacts.org You dont No me!!!!!

    I say wikipedia is better. -_- Sorry _ ( not )

  • You dont No me!!!!!

    Ok look, Good info but Earth is 3rd not 4th. Plus did not tell who discovered Earth! -_- I say wikipedia is better even tho they lie sometimes.

  • http://lisd.net awesomeness

    u luzers i was so awesome that i snaped and you were gone. ha ha |:D

  • http://nowebsite DEAR Sss:)

    so, i believe God made the earth. Sss:), i agree! hope you are readin’ dis!
    I AM A CHRISTIAN

  • kasturi

    i was curious to know that who discoverd earth????but fact is that god discover it and galileo just identified its position..according to my opinion…earth is most beautiful planet on the earth.but why only earth has these properties????why not the planet behind or after earth posses these properties?????

  • http://gmail.com krazy peps

    Lalalal WE ROCK¡!!!!!!!!!!!!!!!!!!ILOVEEARTH

  • kooloo Trunk

    Yes , God did create the earth but don’t push your beliefs on everybody else they have to want to know for themselves

  • Alex

    I like Uranus. It’s cool 8)

  • Sss:)

    WRONG!!!!!

    Earth wasn’t dsicovered by Galileo or who ever.People were just there. GOD created the earth and everything in it and on it!!! He made the people and put them on the earth!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  • http://google menaig

    who discoverd earth

  • http://google menaig

    wach disney channel 51.

  • :)

    :) thx really helpfull

  • hanni hanni

    i need help anyone

  • jessica reyes

    people think that the earth is the center of the solar system but it reaaly is not the center of the solar system the real story is that the sun is the center of the solar system but now i know that it is not but thinking about that what is realy the center of the earth have you ever thougt about tha t try to enter that and put it on line so i could see if is true cause i know what realy the center of the sola system and good luck but don’s cheat be a inteligent for the people maybe is going to be right and you make me a fool because i thougt that i was right i don’t know give a try bye and all see up to see how many people try to make me a fool and i will tell who won good luck :)

  • jessica castillo

    the earth was discoverd by galileo

  • http://planetfacts pie head the 3

    who cares about the earth when u can live on the moon

  • http://planetfacts loser

    so who cares about earth when we could live on the moon

  • http://planetfacts loser

    well my story is it started with a bang and then i was born and thats the best story ever so who cares about earth when we could live on the moon

  • gina

    NO HELP AT ALLLLL !

  • randy estevanez

    u r all idiots i discovered earth.

  • maddie

    if you are wondering earth is the third planet from the sun and adam and eve were the first people to live on earth if i remember clearly. oh and if you are wondering some of you were right and some of you are complete idots.

  • http://yahoo.com jus

    d ert was formed by jesus

  • Retard

    Earth is 3rd plante from the Sun you Dingus…

  • balls

    i love u i. p. freely

  • http://www.google.com I. P. freely

    you should tell how the planets were formed!!!