The implication that life can be found everywhere must be compounded with the planets that are at an adequate distance from their star in order to provide the necessary temperature for liquid water and proteins to endure. Also these planets cannot be too large, or gravity will become a problem.
How close to ours is any such planet?
How can we determine if such a planet has life at the distance that we are from them?
How close to ours is any such planet?
How can we determine if such a planet has life at the distance that we are from them?