The bible says that we are the only planet with life if I'm right

The bible doesn't actually say that. However the only mention of "aliens" in the bible, references angelic [interdimensional?] beings.
2nd Kings 2:11 &12 (chariot of fire)
[11] And it came to pass, as they still went on, and talked, that, behold, there appeared a chariot of fire, and horses of fire, and parted them both asunder; and Elijah went up by a whirlwind into heaven.
[12] And Elisha saw it, and he cried, My father, my father, the chariot of Israel, and the horsemen thereof. And he saw him no more: and he took hold of his own clothes, and rent them in two pieces.
Ezekiel chapter 1 (wheels within wheels)