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Consumer demand for a multi-terawatt system would create the necessary multi-million ton/yr logistical system. A number of methods have been proposed to take care of these problems, starting from big arks that may carry complete societies and ecosystems, to microscopic house probes. Many different spacecraft propulsion systems have been proposed to offer spacecraft the required speeds, together with nuclear propulsion, beam-powered propulsion, and methods based on speculative physics. It has been reported that at the 2008 Joint Propulsion Conference, a number of experts opined that it was improbable that humans would ever discover past the Solar System. Brice N. Cassenti, an affiliate professor with the Department of Engineering and Science at Rensselaer Polytechnic Institute, acknowledged that at least 100 occasions the entire power output of the complete world can be required to send a probe to the nearest star. Uploaded human minds or AI could be transmitted with laser or radio alerts at the pace of light. This requires a receiver on the vacation spot which might first need to be set up e.g. by people, probes, self replicating machines , or an alien civilization .
If this were performed with an acceleration just like that experienced at the Earth’s floor, it might have the added advantage of producing artificial “gravity” for the crew. Supplying the power required, however, would be prohibitively costly with present expertise.
Prime Targets For Interstellar Journey
This propulsion system incorporates the prospect of very high particular impulse (area journey’s equivalent of fuel economy) … Read More