There are tons of movies about aliens coming to Earth. Sometimes they come to be our friends, sometimes they come to destroy us-and sometimes they come to make circles in our cornfields. But what about reality? Do scientists actually believe there is intelligent life somewhere out in space? In fact, many scientists spend their days looking for signs of life throughout the galaxy. Others look for ways to make contact with aliens if they exist. And still others try to figure out how life beyond Earth would even be possible. Quite a few of these scientists also have some things to say about UFOs, crop circles, alien abductions, and little green men, too.