每日天文一图展示了由专业天文学家撰写并解释的宇宙图像。2024年12月30日展示的是M27哑铃星云，这是一个明亮的行星状星云，位于狐狸座方向，距离我们约1000光年。星云的颜色由硫（红色）、氢（绿色）和氧（蓝色）发出。文章指出，大约60亿年后，我们的太阳也会像M27一样，外层气体脱落形成行星状星云，中心则会变成一颗白矮星。尽管M27的发现可以追溯到18世纪，但其复杂形状的成因至今仍是科学界的谜团。

🔭M27哑铃星云是一个明亮的行星状星云，在狐狸座方向可见，距离我们约1000光年，是天空中最亮的行星状星云之一。

✨星云的颜色由硫（红色）、氢（绿色）和氧（蓝色）发出，这些颜色揭示了星云的组成成分。

☀️大约60亿年后，我们的太阳也会经历类似的过程，外层气体脱落形成行星状星云，而中心则会变成一颗X射线辐射的白矮星。

❓尽管18世纪就发现了M27，但行星状星云的复杂形状是如何形成的仍然是科学界的一个谜。

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.2024 December 30 M27: The Dumbbell Nebula Image Credit & Copyright: Christopher Stobie Explanation: Is this what will become of our Sun? Quite possibly. The first hint of our Sun's future was discovered inadvertently in1764.At that time,Charles Messier was compiling a listof diffuse objects not to be confused with comets.The 27th object onMessier's list, now known asM27 or the Dumbbell Nebula, is aplanetary nebula,one of the brightestplanetary nebulas on the sky and visible with binocularstoward the constellation of the Fox (Vulpecula).It takes light about 1000 years to reach us from M27, featured here in colors emitted bysulfur (red), hydrogen (green) andoxygen (blue).We now know that in about 6 billion years, our Sun will shed its outer gases into a planetary nebula like M27, while its remaining center will become an X-ray hot white dwarf star. Understanding the physics and significance ofM27was well beyond 18th century science, though.Even today, many things remain mysterious aboutplanetary nebulas, including how their intricate shapes are created. APOD Year in Review: Night Sky Network Presentation for 2024 Tomorrow's picture: dark and twisted <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)NASA Official: Amber StraughnSpecific rights apply.NASA Web Privacy,Accessibility, Notices; A service of:ASD atNASA /GSFC, NASA Science Activation& Michigan Tech. U.