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, October 17, 2014
How Big?
Today's Pluto Picture of the Day shows us how big a potential post-Pluto target for New Horizons is compared to a few more familiar landmarks.
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