I think that there is a great probability that aliens do exist. For instance, every star that we see in the night sky was estimated to have at least one planet on average. And that's just minuscule portion of our galaxy. Also, there are hundreds of billions of galaxies out there, each with millions of stars within them. Not to mention that life elements here on earth originated from the outer space itself. It is really fascinating to think about this kind of things. The thought that there are other living organisms out there. Though it's quite terrifying to think that there is a probability that these creatures can creep out in our solar system. Only time will tell. LOL