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, November 8, 2018
Sky Pattern
Today's Astronomy Picture of the Day is a multiple exposure image (over time) of the pattern that Mars traces across the sky. The Earth moves around the Sun, Mars moves around the Sun, and the interplay causes Mars (or the other planets) to appear to dance back and forth in our sky.
"Mouseover" the image in the link for a constellation guide.
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