In-space propulsion systems are getting a reboot. Spacecraft propulsion company Phase Four has built an electric radio frequency (RF) propulsion thruster that is easy to mass manufacture and doesn’t erode over time. Phase Four CEO and founder Simon Halpern, who has worked at Ball Aerospace, Northrop Grumman, and Spire Global during his career, said the current field of electric propulsion technologies are ripe for an evolution…
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