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Date: 2015-01-17 20:41:07Astrodynamics Spacecraft propulsion Edward Belbruno Hohmann transfer orbit Mars program Launch window Retrorocket Mars Aerospace engineering Space technology Spaceflight | Researchers propose ballistic capture as cheaper path to MarsAdd to Reading ListSource URL: phys.orgDownload Document from Source WebsiteFile Size: 36,86 KBShare Document on Facebook |