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, March 5, 2019
Tiny Bubbles
Today's Astronomy Picture of the Day shows bubbles in the structure of galaxy NGC 3079. What created them? One theory is interaction with a supermassive black hole within the galaxy. "Mouseover" the image in the link to see how everything lines up.
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