Copyright:Don Goldman
原文:
Driven by the explosion of a massive star, supernova remnant Puppis A is blasting into the surrounding interstellar medium about 7,000 light-years away. At that distance, this colorful telescopic field based on broadband and narrowband optical image data is about 60 light-years across. As the supernova remnant expands into its clumpy, non-uniform surroundings, shocked filaments of oxygen atoms glow in green-blue hues. Hydrogen and nitrogen are in red. Light from the initial supernova itself, triggered by the collapse of the massive star’s core, would have reached Earth about 3,700 years ago. The Puppis A remnant is actually seen through outlying emission from the closer but more ancient Vela supernova remnant, near the crowded plane of our Milky Way galaxy. Still glowing across the electromagnetic spectrum Puppis A remains one of the brightest sources in the X-ray sky.
中文翻譯:
超新星遺跡Puppis A正以約7,000光年的距離爆炸，擴散到周圍的星際介質中。這個基於寬帶和窄帶光學影像數據的五彩繽紛望遠鏡場，約有60光年的寬度。當超新星遺跡向其不均勻的外部環境擴張時，氧原子的震盪絲狀結構在綠藍色的光輝中閃耀，而氫和氮則呈現紅色。最初的超新星光芒是由大量恆星核心的塌縮引發的，約3,700年前曾經抵達地球。Puppis A遺跡其實也是透過更古老卻更接近的Vela超新星遺跡被觀察到，這一切發生在擁擠的我們銀河系的平面附近。至今，Puppis A仍在各種電磁波譜中閃耀，是X射線天空中最亮的來源之一。
#PuppisA #SupernovaRemnants #Astrophysics #NASA #Space #XRaySky #MilkyWay #StellarExplosion #InterstellarMedium #CosmicBeauty #AstronomyLovers
來源:NASA每日圖片
