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)
Thursday, December 26, 2013
Common Stuff
Today's Astronomy Picture of the Day shows an aggregation of the most common element in the universe: hydrogen. Who knew such common stuff could be so beautiful? (Mouseover the image for an alternative view.)
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