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, May 19, 2016
The Stains of Life?
Today's Astronomy Picture of the Day shows Jupiter's icy moon Europa, as imaged by the Galileo orbiter in 1998. Recent studies indicate that there might be enough chemical energy to produce conditions favorable for life. What lies beneath?
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