Science Salon

The endlessly fascinating question of whether we are alone in the universe has always been accompanied by another, more complicated one: if there is extraterrestrial life, how would we communicate with it? In his book Extraterrestrial Languages, Daniel Oberhaus leads readers on a quest for extraterrestrial communication. Exploring Earthlings’ various attempts to reach out to non-Earthlings over the centuries, he poses some not entirely answerable questions. If we send a message into space, will extraterrestrial beings receive it? Will they understand? What languages will they (and we) speak? If we can’t even communicate with dolphins and whales, which are mammals, or chimpanzees and gorillas, which are primates, how are we going to communicate with sentient beings that evolved on another planet? If we want to send a message to far-future humans to, say, warn them not to open a container of radioactive waste from a nuclear plant, what would we put on the container to communicate the danger within? Is there not