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)
Saturday, April 20, 2019
Flame On!
Today's Astronomy Picture of the Day brings us the business end of twenty-seven Merlin rocket engines on the Heavy Falcon vehicle.
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