NGC 6744：星系外特写
(原标题: NGC 6744: Extragalactic Close-Up)
2022-11-25
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美丽的螺旋星系NGC 6744直径近17.5万光年。这比银河系还大。它位于距离我们约3000万光年远的南星座Pavo，它的星系盘向我们的视线倾斜。这张哈勃望远镜拍摄的邻近岛屿宇宙的特写照片横跨ngc6744的中心区域，跨度约24000光年。哈勃结合了可见光和紫外线的图像数据。这个巨大星系淡黄色的核心主要是由古老的冷恒星发出的可见光。在核心之外是恒星形成区域和沿内侧旋臂散布的年轻星团。NGC 6744的年轻星团在紫外线波段是明亮的，显示为蓝色和品红色。散布在画面周围的尖状恒星是前景恒星，它们就在我们的银河系内。
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Beautiful spiral galaxy NGC 6744 is nearly 175,000 light-years across. That's larger than the Milky Way. It lies some 30 million light-years distant in the southern constellation Pavo, with its galactic disk tilted towards our line of sight. This Hubble close-up of the nearby island universe spans about 24,000 light-years or so across NGC 6744's central region. The Hubble view combines visible light and ultraviolet image data. The giant galaxy's yellowish core is dominated by the visible light from old, cool stars. Beyond the core are star-forming regions and young star clusters scattered along the inner spiral arms. NGC 6744's young star clusters are bright at ultraviolet wavelengths, shown in blue and magenta hues. Spiky stars scattered around the frame are foreground stars and well within our own Milky Way.