What's Your Big Question?

Is there another planet similar to our's? Is the idea of other unknown species sharing our world possible? Growing up and being exposed to television is the reason why I wonder these things. Have people really seen space shuttles fly in the night sky, or is it simply a figment of their imaginations? Have people been abducted by aliens, or have they just gone insane from all the drugs they inject in their bodies? How is it possible for people such as Leonardo Da Vinci to have so much knowledge on inventions that weren't invented until the 20th century? Was it because he's a brilliant human being, or is the theory of him being visited by aliens true? If aliens really do exist then wouldn't that contradict everything in the bible? I can ask these questions all day, but for what purpose? They will never be answered, at least not during my life time.