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)
Sunday, March 6, 2016
Percussion
Today's Astronomy Picture of the Day is a short video showing activity on the Sun. I recall seeing a movie of this in school, to the accompaniment of much percussion
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