More seriously, although those stories are a lot of fun, (and also check out his short stories which I felt are better):
It is very unlikely that there is anything out there that is capable of actually coming here, for the same reason it's very unlikely we can ever leave the solar system. A radio "conversation" over many generations - if that's even possible - would be the high point of our civilisation.
It is very unlikely that there is anything out there that is capable of actually coming here, for the same reason it's very unlikely we can ever leave the solar system. A radio "conversation" over many generations - if that's even possible - would be the high point of our civilisation.