Alien Invasions | Case File 251

The star at the center of our solar system has an estimated age of 4.6 billion years, while the Milky Way galaxy sits at a venerable 13.6 billion years old. Each day, new stars are cataloged and observed for the presence of orbiting bodies. Each day, humans angle our instruments at our nearest cosmic neighbors and listen for something to reveal that we are not the only ones searching for intelligent life in our galaxy. But what if we reached out and what reached back, did not have benevolent intent? If we were to discover that our fate as a species was...