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)
Friday, December 30, 2016
Only Occasionally the Dark Side
There really is no dark side of the Moon. At least, not all the time. Today's Astronomy Picture of the Day shows the lunar farside, of which we can only see glimpses as the Moon "nods" in orbit around us. Another image from the hard-working (and mostly forgotten by us) Lunar Reconnaissance Orbiter.
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