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, February 10, 2019
What Lies Beneath
Today's Astronomy Picture of the Day shows what lies beneath the perpetual clouds of Venus. Our sister planet, it is shown here side by side with Earth so that you can see how large some of the features are.