These great hollow globes of artificial super-metals, and artificial transparent adamant, ranged in size from the earliest and smallest structures, which were no bigger than a very small asteroid, to spheres considerably larger than the Earth. (Olaf Stapledon, STAR MAKER)
Saturday, March 1, 2014
Twenty Years Ago
Could we have started crewed missions to Mars...twenty years ago? Space historian David S. F. Portree looks at the plan proposed by NASA engineer (and occasional, alas, all too occasional! SF author) Geoffrey Landis to get us to the red planet.
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