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, July 23, 2019
The Wind Between the Stars
Today's Astronomy Picture of the Day brings us Messier 82, the Cigar Galaxy, enhanced and processed to show filments of gas and dust being driven by a galactic superwind.