Many scientists believe that alien civilisations exist.So let’s imagine that we suddenly stand face-to-face with members of an alien species.What would we do first?Surely communicating that we come in peace would be a priority.But would we ever be able to understand each other?The one thing we can be confident about exchanging with aliens is scientific information. Many scientists believe that alien civilizations exist.So let’s imagine that we suddenly stand face-to-face with members of an alien species. What would we do first? Surely communicating that we come in peace would be a priority.But would we ever be able to understand each other? The one thing we can be confident about exchanging with aliens is scientific information.