Planet Zemlja je treći planet po redoslijedu udaljenosti od Sunca i najveći među unutarnjim planetima. Prosječno je od Sunca udaljen 149.6 milijuna kilometara. Zemljina putanja nije jako izdužena, numerički ekscentricitet Zemljine staze iznosi 0.01679, zbog čega se Zemlja Suncu približi za 2.5 milijuna kilometara ili udalji za jednako toliko.
Zemlja ima svojstvenu topografiju (71% kore prekriveno je vodom), ima atmosferu s dušikom i kisikom, te biosferu. Jedini je planet koji ima oceane, atmosferu s mnogo kisika i živu geološku aktivnost. Do te raznolikosti, koju nema nijedan drugi planet. Promatrana iz daljine, Zemlja je modrikasti planet. Zemlja je planet na kojem živi čovjek i jedini nama poznati planet na kojem postoji život. Evolucionisti smatraju da je Zemlja nastala prije otprilike 4.6 milijarda godina.
Planet Earth is the third planet in order of distance from the Sun and the largest of the inner planets. The average distance from the Sun is 149.6 million kilometers. The Earth's orbit is not very elongated, numerical eccentricity of the Earth's trail is 0.01679, which is why the Earth to the Sun closer to 2.5 million kilometers away, or for as much.
The Earth has a peculiar topography (71% of the crust is covered by water), has an atmosphere of nitrogen and oxygen, and the biosphere. It is the only planet that has oceans, atmosphere with plenty of oxygen and live geological activity. Up to this diversity, which no other planet. Seen from a distance, the Earth is bluish planet. Earth is the planet on which he lives, is the only known home planet where life exists. Evolutionists believe that the Earth was formed approximately 4.6 billion years ago.