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, February 11, 2016
Bam!
Today's Astronomy Picture of the Day depicts LIGO data and what it means. In short: gravitational waves! Einstein wins again!
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