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  • ...of the propellant on the spacecraft in long-duration operations. The first spaceflight to use electric propulsion was a mercury-fueled ion thruster developed by [
    69 KB (10,077 words) - 20:35, 20 September 2010
  • [[Category:Spaceflight]]
    2 KB (339 words) - 09:08, 20 September 2010