I was watching recently that PBS Space Video on youtube about space propulsion and it got me thinking about Project Orion again. They talk about sending humans to another star system, but would it not be spectacular enough to send probe? The probe could scan and photograph planets there and maybe we could learn lots of stuff or are telescopes enough? This spaceship could bring with it lots of equipment since it can be massive. They say how it would take 90 years to arrive to closest star, but that's with people in it, maybe the probe doesn't need to brake but use all the nukes to speed up, then it would be there in 45 years and we would get data sooner if it had some nice telescopes to look ahead. Maybe it could even launch smaller probes to orbit those planets but then it would be the problem of communication since they would have to transmit data to Orion first and if it's not stooping there wouldn't be much time. But maybe since it doesn't carry people it could accelerate faster, meaning that it could use bigger and fewer bombs and therefore have enough to stop? When it comes to fallout the Orion could be launched over the North Pole where the field lines go straight out, and use very unsymmetrical bombs so you can be sure the debris is going outwards and not inwards. To soften this even further neutron bombs could be used since they produce neutrons without fission, and neutrons you could easily absorb. That would have meant killing one person per mission - but is that acceptable that someone must die? Of course the question of politics and "do we really need this?" Could NASA, ESA and China work together in making this? Would this be a good idea? Would it not bring precious data?