Enrico Fermi. Credit: Liz Zonarich / Harvard Staff The idea that bad things happen to good solar systems is a recurring theme in science fiction, with everything from natural disasters, to biological disasters, to disasters of life’s own making wiping out worlds in book after book. While often these really bad days for alien worlds are just a way of moving the plot forward, they also speak to one of the weirder aspects of the reality we deal with - as far as we know, we are alone in this universe. As of this recording, on June 12, there is no clear evidence of alien civilizations. Yes,...