Hello. As many theories and hypotheses that there are about a secure, reliable and effective future space exploration and colonisation that there are, I would like to dedicate this thread to the discussion of this topic. Some of the suggestions are: Von Neumann probes are an effective strategy for colonisation. It could be possible to make them from nanotechnology. The special ability (and only ability) of this probe is that it 'reproduces' into more of there bots. It receives its material from bodies it touches. The unviability of effective fuel is the biggest problem of exploration, because with the current chemical fuel that we have it would take decades to only get to the edge of our solar system. This is way beyond a lifetime of a human being. The most promising 'fuel' idea that we have now is nuclear or atomic fuel, which would work by nuclear fission or fusion. There also is a possibility of laser propulsion. So, as I said, I would like to hear your views on future propulsion and space colonisation/exploration strategies and possibilities. Thank you.