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, April 24, 2015
From the Ocean, to the Stars
Today's Astronomy Picture of the Day shows stars in the ocean and stars in space: bioluminescence from plankton lights the water and stars of the Milky Way light the sky.