超新星遗迹: 甘姆星云
2022年11月29日 The Gum Nebula Supernova Remnant Image Credit & Copyright: Victor Lima Explanation: Because the Gum Nebula is the closest supernova remnant, it is actually hard to see. Spanning 40 degrees across the sky, the nebula appears so large and faint that it is easily lost in the din of a bright and complex background. The Gum Nebula is highlighted ...