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, January 1, 2015
Subtle Filaments
Today's Astronomy Picture of the Day shows the Vela Supernova Remnant. Pictures like these, when I first encountered them in the mid-1960's, were a big driver towards my life-long interest in astronomy. Look at those delicate filaments! (Then realize how big those "delicate" filaments are!)
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