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)
Monday, April 1, 2013
Perception Test
Today's Astronomy Picture of the Day celebrates the date (April 1) with a test. Which is the moon? Which is the frying pan. Follow the links for even more tests!
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