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, September 5, 2015
Rocket Arc
A lot of arcs in the sky of late! Today's Astronomy Picture of the Day does not bring us the arc of the Milky Way, but instead the arc of a vehicle slipping the bounds of gravity: An Atlas V carrying a communications satellite into orbit.
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