In these Facebook days, our obsession with what others think of us can only increase.
We want them to want us. We want them to love us. We want them to love themselves for loving us.
Which leads us to wondering what aliens might think of us. Stephen Hawking, for his part, worried that they might actually hate us with a fervor last experienced when Mike Tyson espied Evander Holyfield's ear.
However, the experts on a two-part Science Channel series called "Alien Encounters" speculate with a rather more positive spirit.