a computer recorded the signal as six letters and numbers. astronomer jerry ehman saw the data and wrote one word in the margin. larry: this is a remarkable, remarkable entertaining feature that will air on discovery sunday. john smithson and ben bowie are the executive producers of into the universe with stephen hawking. this would be an opinion, ben. do you think we would be hostile or not hostile to another environment coming here? do i think i don t think you can really say. i think the only thing you can say is that you don t know. if you don t know, then caution seems to be the most sensible approach. i m not one to call whether aliens will come here and stroke us and pet us or zap us with lasers. i think we just don t know, and therefore you can t really