It's our human curiosity which makes us ponder what is beyond our planet and solar system. In terms of our knowledge compared to all the available knowledge of the universe, we're like small infants in a crib located in the middle of a dark room. We strain to see objects within the room, we are aware of things outside the room, we may even be familiar with the things closest to us, both in the crib and from outside. We sometimes foolishly believe we have the whole thing figured out, but we are mere infants in a dark crib. We know virtually nothing, and even things we think we know are proven wrong all the time.
I love to tease my "Science" friends with this... Did you know, most physics textbooks in print are wrong? They state the universe is mostly comprised of atoms and this is incorrect. The universe is mostly comprised of dark energy and dark matter, of which we know very little about. There is no atomic structure but it has gravity... it's there, but it's not there. Quantum physics reveals things that less than 100 years ago would have been considered scientifically impossible. So much so, it wouldn't have even been viewed as legitimate science fiction. It would have been much more like Alice in Wonderland. Today, it is being confirmed at CERN and other large hadron colliders around the globe.
We are literally discovering that the basic fundamental laws of physics as we know them, seem to break down at the subatomic level and at the speed of light. The impossible becomes possible. We can throw Logic out the window because it may not apply. The upside is, this can open the imaginations of the human mind and science has a course. Man exists in his own paradox... We exist but we do not know WHY.
Everything man does, boils down to that one basic fundamental truth.