NGC 6164: 龙蛋星云及其外晕
2022年12月26日 NGC 6164: Dragon’s Egg Nebula and Halo Image Credit & Copyright: Russell Croman Explanation: The star at the center created everything. Known as the Dragon’s Egg, this star — a rare, hot, luminous O-type star some 40 times as massive as the Sun — created not only the complex nebula (NGC 6164) that immediately surround...