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, March 7, 2018
Arcs, Jets and Shocks
Today's Astronomy Picture of the Day is a detailed look inside nebular complex NGC 1999. "Mouseover" the image in the link for a guide.
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