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, July 22, 2018
Universal Plank
Today's Astronomy Picture of the Day is an image of data collected by the ESA's Planck satellite which spent 2009 to 2013 to map our universe. As a result, we've been able to stretch the estimated age of the universe back to 13.8 billion years.
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