RCW 86: 古超新星遗迹
2023年3月3日 RCW 86: Historical Supernova Remnant Image Credit: CTIO/NOIRLab/DOE/NSF/AURA, T.A. Rector (Univ.of Alaska/NSF’s NOIRLab), J. Miller (Gemini Obs./NSF’s NOIRLab), M. Zamani & D. de Martin (NSF’s NOIRLab) Explanation: In 185 AD, Chinese astronomers recorded the appearance of a new star in the Nanmen asterism. That part of the sky is identified wi...