保护地球，探索宇宙，发现文明
2021年01月18日 The Medulla Nebula Supernova Remnant Image Credit & Copyright: Russell Croman Explanation: What powers this unusual nebula? CTB-1 is the expanding gas shell that was left when a massive star toward the constellation of Cassiopeia exploded about 10,000 years ago. The star likely detonated when it ran out of elements, near its core, that could...
2020年12月10日 Simeis 147: Supernova Remnant Image Credit & Copyright: Georges Attard Explanation: It’s easy to get lost following the intricate looping filaments in this detailed image of supernova remnant Simeis 147. Also cataloged as Sharpless 2-240 it goes by the popular nickname, the Spaghetti Nebula. Seen toward the boundary of the constellatio...