Copyright:
Ogetay Kayali
(Michigan Tech U.)
Text:
Ogetay Kayali
(Michigan Tech U.)
中文翻譯:
如果你仰望天空，看到一群星星，大小像滿月，那就是昴星團（Pleiades，又稱M45）。這是天空中最著名的星團之一，甚至在光污染的城市中也能看到它最亮的星星。但在黑暗的天空下，你的肉眼也能看到它周圍的氣體和塵埃，也就是所謂的星雲。使用望遠鏡還能看到更多的美景。昴星團的亮藍色星星，燦爛地照亮了周圍的塵埃，創造出只有在長時間曝光下才能看到的模糊藍色光芒。這還不是全部，這些宇宙塵埃看起來像是伸展的手臂，而整個結構被宇宙中最豐富的元素——氫的紅光所環繞。這幅作品是由德克薩斯州的Starfront Observatory拍攝的，曝光時間接近25小時，捕捉到了這片星雲的美麗。
原文:
If you have looked at the sky and seen a group of stars about the size of the full Moon, that’s the Pleiades (M45). Perhaps the most famous star cluster in the sky, its brightest stars can be seen even from the light-polluted cities. But your unaided eye can also see its nebulosity — the gas and dust surrounding it — under dark skies. However, telescopes can catch even more. The bright blue stars of the Pleiades, also known as the Seven Sisters, light up their surrounding dust, causing it to appear a diffuse blue that can only be seen under long exposures. But that’s not all. The cosmic dust appears to stretch upward like ethereal arms. And the entire structure is surrounded by a reddish glow from the most abundant element in the universe: hydrogen. The featured image is composed of nearly 25 hours of exposure and was captured last year from Starfront Observatory, in Texas, USA Explore Your Universe: Random APOD Generator
來源:NASA每日圖片
