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 4, 2018
Set the Controls for the Heart of the Sun
Today's Astronomy Picture of the Day shows a transit of Venus across the face of the Sun. Taken in 2012, our next view of such an event won't be until 2117.