Aliens

As a kid I loved imagining the little green dudes from outer space and loved drawing little cartoons of them in my spare time. A week ago I had a serious discussion with a friend of mine, about the idea of extra terrestrial life. He told me that he had seen an episode on the history channel about UFOs, and that the "experts" found markings on the inside walls of pyramids, from 4,000 years ago, channeling information directly towards the idea of UFOs and space life. I asked him if he actually believed what the "experts" were saying, and he told me "they know what they are talking about", " it was on the history channel". Just because it is on the history channel, does it make it true? No no no. Were they there 4,000 years ago? Do they know exactly what the markings mean? How can they be positive? Tell me this, where in the Bible does it talk about any living matter other than the planet Earth? God created life on Earth. As for me, I don't believe on life anywhere other than Earth, but I still like to draw the little green guys.