Top Spacecraft Propulsion Innovations in 2026
Chemical rockets still handle launch, but everything past Earth orbit is shifting. We cover the propulsion technologies defining 2026, from Hall-effect thrusters flying on thousands of satellites to NASA JPL's 120-kilowatt lithium MPD thruster prototype, alongside nuclear thermal engines, solar sails, and fusion concepts still working toward flight. We compare where each stands, what tradeoffs they make between thrust and efficiency, and which missions each is actually built for, plus a look at the Alzofon effect and other concepts we track in our ongoing propulsion coverage.
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