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Unlike rockets that burn chemical fuel, Sunbirds would generate thrust using a Direct Fusion Drive (DDFD)—a system powered by fusing deuterium and helium-3, two hydrogen isotopes that could, in ...
U.K. start-up Pulsar Fusion has unveiled plans to build a fleet of reusable nuclear fusion-powered rockets, known as Sunbirds, that could cut journey times across the solar system in half.