MyCn 18: 沙漏星云
2023年10月3日 MyCn 18: The Engraved Hourglass Planetary Nebula Image Credit & Copyright: NASA, ESA, Hubble, HLA; Processing & Copyright: Harshwardhan Pathak Explanation: Do you see the hourglass shape — or does it see you? If you can picture it, the rings of MyCn 18 trace the outline of an hourglass — although one with an unusual eye in it...