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 22, 2017
High Radiant
Today's Astronomy Picture of the Day is a time lapse showing the Geminids. Notice how they all seem to come from a central point (the radiant)? In this case, the radiant is centered about the constellation of Gemini, giving the shower it's name. Where do "showers" come from? Asteroids and comets that cross the orbit of the Earth.
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