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)
Sunday, September 29, 2019
The Cosmic Horologist
Today's Astronomy Picture of the Day shows planetary nebula MyCn 18, a cosmic hourglass imaged here by the Hubble Space Telescope.
No comments:
Post a Comment