As in Genesis Chapter One, verse one, the earth is mentioned again in addition to "The heavens." This time "heaven" is plural whereas in Chapter One "heaven" is singular. After the "beginning" God went on to create more heavens. There is only one earth, just as there is only one you. Mankind is unique in the Universe.
Verse two states, "And on the seventh day God ended his work which he had made; and rested on the seventh day from all his work which he had made." Everything that God made or ever will make has already been created. The seed of all humanity was within Adam's and Eve's DNA. We were created by God "in the beginning."
It's a wonderful blessing to know that we were in the mind of God from the very beginning when he created "all his work."
~dkg