For as long as human beings have been wondering about the universe, we've been wondering if anyone else is out there. From what we can tell, the lack of evidence for technologically advanced alien civilizations seems to suggest that nobody is there.
One of the more profound questions we're confronted with when pondering the cosmos relates to our identity as human beings. We consider this question every time we encounter ourselves in relation to the bigger picture of the cosmos: are we
Human beings may never achieve the level of rapid interstellar spaceflight portrayed in Star Trek. We may never achieve faster-than-light travel at all. We may remain forever limited to speeds that make traveling between stars take hundreds or thousands of