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)
Tuesday, March 4, 2014
Solar Loops
Today's Astronomy Picture of the Day shows some activity on Our Quiet Sun. To put it into perspective, a small blue dot is shown.
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