Copyright:
Damian Peach/SEN
原文:
In one of the brightest parts of Milky Way lies a nebula where some of the oddest things occur. NGC 3372, known as the Great Nebula in Carina, is home to massive stars and changing nebulas. The Keyhole Nebula (NGC 3324), the bright structure just above the image center, houses several of these massive stars and has itself changed its appearance. The entire Carina Nebula spans over 300 light years and lies about 7,500 light-years away in the constellation of Carina. Eta Carinae, the most energetic star in the nebula, was one of the brightest stars in the sky in the 1830s, but then faded dramatically. Eta Carinae is the brightest star near the image center, just left of the Keyhole Nebula. While Eta Carinae itself maybe on the verge of a supernova explosion, X-ray images indicate that much of the Great Carina Nebula has been a veritable supernova factory.
中文翻譯:
在銀河系最亮的部分之一，存在著一個奇特的星雲。NGC 3372，即卡里那大星雲，是一個充滿巨大恆星和變化的星雲。位於圖像中心上方的明亮結構被稱為鑰匙孔星雲 (NGC 3324)，它也容納了幾顆這樣的巨大恆星，且其外觀隨著時間有所改變。整個卡里那星雲橫跨超過300光年，距離地球大約7500光年，位於卡里那座標星座中。
在這個星雲中，艾塔卡里那 (Eta Carinae) 是最具能量的恆星，1830年代曾是天空中最明亮的恆星之一，但隨後其光芒驟然減弱。艾塔卡里那就是圖像中心附近最亮的恆星，位於鑰匙孔星雲的左側。儘管艾塔卡里那可能即將爆炸成超新星，但 X 射線圖像顯示，整個卡里那大星雲實際上是一個超新星生成工廠。
#卡里那大星雲 #鑰匙孔星雲 #艾塔卡里那 #超新星 #宇宙奇觀 #星際旅行 #科學探索 #天文學
來源:NASA每日圖片
