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, September 11, 2019
Icy Heart
Today's Astronomy Picture of the Day shows IC 1805, The Heart Nebula, near the constellation of Cassiopeia. More like a cave, than a heart, to me.
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