The Case for Extraterrestrial Teenagers

摘要

If movies and television shows are to be believed， you would think extraterrestrial aliens and encounters with them would be common.Starting with the 1902 film”A Trip to the Moon”through today’s”The Mandalori-an，”we have long enjoyed imagining creatures from other planets.The idea that they exist is intriguing， and indeed， many of us believe alien creatures are real.In a recent survey of 24 countries， some 61% of people surveyed said they believe that life exists on other planets， and 47% think there are intelligent civilizations elsewhere in the universe.But believing something is true and proving it to be true are two entirely different things.According to NASA， no life beyond Earth has been detected yet， and there is no concrete evidence that alien life has ever visited our planet.But could there be alien teenagers on another planet looking out into space， wondering just as we do， about life beyond their planet? If so， how might we find them? Three main questions help guide our search for extraterrestrial life.The first is:What other planets appear to have conditions that would support life? The second revolves around what that life might look like.And finally， what kind of evidence should we look for to prove life exists elsewhere?