But if E.T. sent us such a string, how could we Earthlings even begin to decode it? A new mathematical approach proposes a way. For anyone trying to interpret the Arecibo message — a drawing ...

At 3 p.m. EDT (1900 GMT) on Wednesday (May 24), Europe's Trace Gas Orbiter (TGO) Mars probe will send a coded message that will ... will then attempt to decode the missive, as part of an ambitious ...