UDLS

There are more stars in the universe than our puny meatbrains can possibly comprehend. Likewise, the universe is ridiculously old. So why wasn’t the galaxy filled with advanced civilizations millions of years before we came down out of the trees? SETI hasn’t turned up the slightest scrap of evidence for anyone else zipping around out there after almost 50 years of looking. What might this ominous silence mean for us here on Earth? (Hint: Nothing good.)