Aliens almost definitely exist. At least, that's what two astronomers told Congress this week, as they appealed for continued funding to research life beyond Earth. According to ABC News, Dan Werthimer, director of the SETI [search for extraterrestrial intelligence] Research Center at the University of California, Berkeley, told the House Committee on Science, Space and Technology Wednesday that the possibility of extraterrestrial microbial life is "close to 100 percent." "In the last 50 years, evidence has steadily mounted that the components and conditions we believe necessary for life are common and perhaps ubiquitous in our galaxy," said Werthimer in his...