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)
Friday, July 1, 2016
Off the List
According to the Near Earth Object Program, a few potential BFR's are off the list of objects that would cause us a very bad day.
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