M2-9: 蝴蝶星云的翅膀
2023年4月16日 M2-9: Wings of a Butterfly Nebula Image Credit: Hubble Legacy Archive, NASA, ESA; Processing: Judy Schmidt Explanation: Are stars better appreciated for their art after they die? Actually, stars usually create their most artistic displays as they die. In the case of low-mass stars like our Sun and M2-9 pictured here, the stars transform themselves...