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, June 5, 2014
Ultra Deep
Today's Astronomy Picture of the Day is the latest in a theme that helped to put the Hubble Space Telescope "on the map" (at least for the public): The Ultra Deep Field 2014.
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