Is there a religion that believes the Earth (mayb the sun, stars and planets as well) are the "god"?

Look for old traditions, in Latin America where old civilizations that believed on the Sun or the elements like the Pachamama...

This is not a belief of any religion that we become one with nature, we become one with the Divine, because religions believe in a God with name and form. But when there is spirituality, then we realize that everything in this world is a manifestation of the Divine. God itself is the Divine. Nature is nothing but the Divine appearing as the mountains, and the seas, the rivers, the clouds, the skies. All these are inanimate but then there is the living organism, living beings which have the Soul stuff. We are that living creature which is nothing but a manifestation of the Divine.