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)
Thursday, February 18, 2016
X-Ray Eyes Take Flight
Today's Astronomy Picture of the Day shows the JAXA H-IIA launch vehicle lifting off, carrying the Hitomi or ASTRO-H X-Ray observatory into orbit.