Copyright:
Giuseppe Donatiello (Italy) and Tim Stone (USA)
原文:
It’s easy to get lost following the intricate strands of the Spaghetti Nebula. A supernova remnant cataloged as Simeis 147 and Sh2-240, the glowing gas filaments cover nearly 3 degrees — 6 full moons — on the sky. That’s about 150 light-years at the stellar debris cloud’s estimated distance of 3,000 light-years. This sharp composite includes image data taken through a narrow-band filter to highlight emission from hydrogen atoms tracing the shocked, glowing gas. The supernova remnant has an estimated age of about 40,000 years, meaning light from the massive stellar explosion first reached Earth about 40,000 years ago. But the expanding remnant is not the only aftermath. The cosmic catastrophe also left behind a spinning neutron star or pulsar, all that remains of the original star’s core.
中文翻譯:
在追隨複雜的意大利面星雲的時候，很容易迷失方向。這是一個超新星遺骸，編號為Simeis 147和Sh2-240，發光的氣體絲線在天空中覆蓋了接近3度的範圍——相當於6個滿月的大小。根據這個星際殘骸估計的距離3000光年，這大約是150光年。這張清晰的合成圖像使用了窄頻濾鏡來突顯氫原子的發射，描繪出被震盪的發光氣體。這個超新星遺骸的年齡估計約為40,000年，意味著來自這場壯觀星際爆炸的光早在40,000年前就已經抵達地球。然而，這個擴張的遺骸並不是唯一的後果。這場宇宙災難還留下了一顆旋轉的中子星，或稱為脈沖星，這是原始星體核心的所有剩餘物。
#SpaghettiNebula #Simeis147 #Sh2-240 #SupernovaRemnant #Astrophysics #NeutronStar #CosmicCatastrophe #AstronomyLovers #SpaceExploration #AstroPhotography
來源:NASA每日圖片
