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)
Monday, April 11, 2016
Today's Astronomy Picture of the Day brings us back to Comet 252/P LINEAR, passing near globular cluster Messier 14 in the constellation of Ophiuchus. LINEAR underwent an outburst and was visible (barely) by naked eye.