南天的二颗彗星
2022年10月8日 Two Comets in Southern Skies Image Credit & Copyright: Jose J. Chambo (Cometografia) Explanation: Heading for its closest approach to the Sun or perihelion on December 20, comet C/2017 K2 (PanSTARRS) remains a sight for telescopic observers as it sweeps through planet Earth’s southern hemisphere skies. First time visitor from the remote...