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)
Wednesday, April 23, 2014
Imaging Mission
A nice photograph of mountains in Guatemala taken during a NASA mission to use radar imaging in Central and South America.
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