Interesting question. In the past I would have said no way is there another planet out there with human life. Now you just never know. God created a huge universal and who knows what he did with it except for what we know. Another planet could be further away from Pluto so we cant detect it and most likely never will. We will find out at the end of time. Maybe he has a spare earth for us to us when we pollute this one and destroy our natural resources so bad and kill each other off in wars that future generations can go there. I dont believe in Hollywoods version of crazy looking green aliens with spaceships. haha that is fantasy. Just my 2 cents worth.