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@60sRefugee The Sunbird engines use #helium3. #PulsarFusion’s design is in the third phase of its development, with the ambitious aim of testing #Sunbird technology in-orbit in 
2027. Sunbirds shall be permanently stationed in low-Earth orbit, where they would attach to spacecraft leaving our atmosphere and propel them at unprecedented speeds toward far-off destinations, such as Mars https://www.smithsonianmag.com/smart-news/fusion-rockets-could-theoretically-cut-our-travel-time-to-mars-in-half-this-uk-startup-wants-to-give-it-a-try-180986455
Sunbird Fusion Drive! 
is a far more logical, sensible place to do 
in under six months 