In
an age when more and more attention is being given to the search for
alien life, the obvious next question is: if we do come across aliens,
how do we communicate with them? This is the subject Daniel Oberhaus
explores in Extraterrestrial Languages.
“If
we send a message into space, will extraterrestrial beings receive it?
Will they understand? What languages will they (and we) speak? Is there
not only a universal grammar (as Noam Chomsky has posited), but also a
grammar of the universe?” publisher Massachusetts Institute of
Technology Press writes in its description of the book.
Indeed,
over the centuries, humans have made various attempts to reach out to
aliens. Oberhaus describes a late-nineteenth-century idea to communicate
with Martians via Morse code and mirrors. In the 20th century emerged
SETI (the search for extraterrestrial intelligence), CETI (communication
with extraterrestrial intelligence), and METI (messaging
extraterrestrial intelligence). Oberhaus describes various media used in
attempts at extraterrestrial communication, from microwave systems to
plaques on spacecrafts to formal logic, and discusses attempts to
formulate a language for Earthlings’ message.
Along
the way, the book underlines something humans take for granted. Our
communication with one another takes place in real time. On the other
hand, messages sent out to space may take centuries to reach aliens, if
at all. The messages, therefore, should be clear about that aspect too.
“Oberhaus
delivers an engaging read, striking a good balance between ‘hard’ and
‘popular’ science. He reviews centuries of initiatives, combining
science with anecdotes, and using linguistics, mathematics,
astrophysics, cognition, and art as feedstock,” Science magazine writes
in its review of the book.
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