Speculating Regarding the Existence of UFOs

Many people these days ask the question, "do UFOs exist?" There are several different ways one can approach this question. First of all one must consider what evidence we have here on earth that UFOs exist and are real. Secondly, one must consider the vast space in the solar system and how small we are, and the odds of life on distant planets. If there is life out there, is it possible for something to live without oxygen. These are all good points to consider when answering the question; do UFOs exist?
<Tab/>We must first examine the evidence we have here on earth. …