All right, so here it is! Archer Enterprise states that they have a theoretical device (in process of proof of concept) that can reach speeds near that of light. Looking at the description of the theory of the device, it looks like this could work, at least in electrically propelling space vehicles without using conventional fuel (it uses electrons as fuel). This device, i think, doesn't break any physics laws known. Before anyone has a nervous breakdown:rofl:, before you visit the links I would like to clarify what certain terms mean. When the say reactionless, they do not mean that it breaks the law of momentum or conservation of energy. Here is the really basic ideal of how it works First, you have your classic ufo flying saucer shape that is symetrical in the x and y axis. If you don't know what I'm talking about, go google it! (or look on website). Anyways, the edge of the saucer is charged to a very negative voltage while the two hulls at the top are charge to a very positive voltage (all done by electrostatic induction). This causes electrons to stream from the negative to the positive side. These electron's arcs are influenced by a dynamic electric and magnetic field (see diagram on website). The electrons are accelerated to near the speed of light and are impacted onto the bottom and top hull, producing a large thrust one each hull. The current flow can be made different between the top and bottom hull (changing resistance), thus a net force can be produced in whatever direction. I encourage you to calculate the force, using relativity kinetic energy, that an electron with, say, 30 MeV (reasonable?) of energy can produce and then find out the total force produced in 10+amps of current. Or, better yet, calculate the energy that the electron will 'receive' as it accelerates from negative to positive side (lol, you'd need a lot more info, including hull shape, resistance, etc. which is in patent if interested, i think) Anyways, here's links (about halfway down, right after they talk about book!, it explains in general the device) stardrivedevice.com/ News: stardrivedevice.com/news.html Patent with full description (39 pages of small text!): v3.espacenet.com/origdoc?IDX=WO0209259&RPN=US6404089&DOC=dcb65d04ab6823da954c0bcb944cf3c36a So, what's your feedback?