I don't think that's the case in this instance. The Bible doesn't specifically talk about God creating life outside of the earth but neither does it specifically rule it out, which makes it still a possibility. The reason I personally don't think that there is life on other planets is because of how the Bible details the account of creation in Genesis and the detail God gives in describing all of the life that He did create here on Earth...I think that if He had created life on other planets He would have said so. But, again, that's just my opinion.