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)
Tuesday, July 31, 2018
Down Below
Today's Astronomy Picture of the Day shows the southern polar cap of Mars. Made up of mainly frozen carbon dioxide, the ESA's Mars Express has detected what might be a sizeable body of liquid water over 1 kilometer under the ground. What lies beneath? Salty water? Life? Let's go and see!
Just don't drink the water...
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