We hoped extraterrestrials could decode the plaque attached to the Pioneer spacecraft in the 1970s. Would we be able to figure out theirs? A recent paper claiming that a comet was the source of SETI’s ...

Imagine the day when we finally receive a signal from an extraterrestrial intelligence, only to find that there’s a message embedded within. Given that we don’t speak the same language, how could we ...

A message that will be broadcast into space later in 2002 has been released to scientists worldwide, to test that it can be decoded easily. The researchers who devised the message eventually hope to ...