If there is intelligent life in galaxies outside our own, is it likely that there will ever be communication between _____ humans and those other life forms? In 2015, a study of 100,000 nearby galaxies revealed that none of them contain any obvious signs of what ______ Earth dwellers would consider advanced forms of life. Astrobiologists, the people who study extraterrestrial life, predict that _______ humans will discover life, in the form of small organisms, on other planets in the next few decades.