NGC 300 :恆星星系
NGC 300: A Galaxy of Stars
來源:Daniel Stern|發表日期:2024-12-02
這個星系很特別,你似乎可以看到很多恆星。在這幅螺旋星系 NGC 300 的深度曝光圖中,恆星是如此的顯而易見,因為這些恆星中有很多都是明亮的藍色,並組成了可分辨的明亮星團。 此外,NGC 300 之所以如此清晰,是因為它是距離地球最近的螺旋星系之一,因為光線到達這裡只需要大約 600 萬年。 當然,星系是由比明亮恆星更多的微弱恆星組成的,甚至更多的星系質量是由看不見的暗物質造成的。 NGC 300 幾乎橫跨了與滿月相同的天空,用小型望遠鏡可以看到它位於南邊的雕刻者星座。這張特寫圖片是 10 月份在智利里奧烏爾塔多拍攝的,是 20 多個小時曝光的合成照片。
原文:This galaxy is unusual for how many stars it seems that you can see. Stars are so abundantly evident in this deep exposure of the spiral galaxy NGC 300 because so many of these stars are bright blue and grouped into resolvable bright star clusters. Additionally, NGC 300 is so clear because it is one of the closest spiral galaxies to Earth, as light takes only about 6 million years to get here. Of course, galaxies are composed of many more faint stars than bright, and even more of a galaxy's mass is attributed to unseen dark matter. NGC 300 spans nearly the same amount of sky as the full moon and is visible with a small telescope toward the southern constellation of the Sculptor. The featured image was captured in October from Rio Hurtado, Chile and is a composite of over 20 hours of exposure.
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