The umbrella fleet departs Earth by starbase1 ()
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This shows Ernst Stuhlinger's ion powered 'Umbrella Ships' leaving Earth for Mars. This was a serious design - the ion engine is halfway down the handle, there's a nuclear reactor at the base of the handle, (safely away from the crew quarters centre and top), and the umbrella structure is a cooling system to shed all the waste heat.
Note also the yellow 'double headed' rocket, intended to descend to the surface of Mars, and fly back up again.
Modelled and rendered in Lightwave 3d