"We've all asked ourselves the question. Looking up at the night sky, it's almost impossible NOT to wonder: Are we alone in the universe? In [this book], Space.com senior writer Dr. Michael Wall treats that question as merely a jumping-off point. He considers, for instance, the myriad of questions that would arise once we do discover life beyond Earth (an eventuality which, top NASA officials told Dr. Wall, is only drawing closer). From the unexpected--do aliens have sex?--to the practical--what would the first aliens we meet look like?--Dr. Wall covers it all. He explores our common perceptions of extraterrestrial creatures and hypothesizes our union with them in the future. Would they be little green men or mere microbes? Would they be found on a planet or moon in our own solar system or orbiting a star far, far away? Would they intend to harm us, and if so, how might they do it? And might they already have visited? Dr. Wall covers questions beyond alien life, venturing into astronom