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)
Tuesday, March 3, 2015
Devils in the Wind
Today's Astronomy Picture of the Day shows a dust devil on the surface of Mars captured by an orbiting spacecraft from Earth.
Think about what I just said there the next time you think we haven't accomplished anything as a species.
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