银河
2021年07月03日 Along the Milky Way Image Credit & Copyright: Rolf Weisenfeld Explanation: You can’t walk along the Milky Way. Still, under a dark sky you can explore it. To the eye the pale luminous trail of light arcing through the sky on a dark, moonless night does appear to be a path through the heavens. The glowing celestial band is the faint, co...