NASA 每日搬运 D58
nasaAlthough beautiful, this image from the Hubble Space Telescope (@NASAHubble) does not do justice to this galaxy’s true appeal: it is actually a spectacular spiral galaxy! From Earth, the galaxy’s vast disk of gas, dust and stars is seen nearly edge-on, flat like a pancake.
哈勃太空望远镜（@NASAHubble）的这张照片虽然很美，但并不符合这个星系真正的吸引力：它实际上是一个壮观的螺旋星系！从地球上看，星系的巨大气体，尘埃和星星几乎就是在边缘上的，像扁饼一样平坦。
Located about a hundred million light-years away in the constellation Cetus (the Sea Monster), this spiral galaxy is not the only one seen here. A handful of other galaxies can be seen lurking in the background, scattered around the narrow strip the main galaxy. Many are oriented face-on or at tilted angles, showing off their glamorous spiral arms and bright cores. Such orientations provide a wealth of detail about the arms and their nuclei, but fully understanding a galaxy’s three-dimensional structure also requires an edge-on view. This gives astronomers an overall idea of how stars are distributed throughout the galaxy and allows them to measure the “height” of the disk and the bright star-studded core.
位于Cetus（海怪）星座约一亿光年远的地方，这里并不是唯一一个这样的旋涡星系。其他一些星系可以在背景中潜伏，散布在主要星系的狭长条带周围。许多是水平面对面或倾斜角度，展现他们迷人的螺旋臂和明亮的核心。这种分布提供了有关旋臂及其原子核的丰富细节，但充分了解星系的三维结构也需要在边缘观察。这给了天文学家一个关于恒星如何分布于整个星系的整体概念，并允许他们测量光盘的“高度”和明亮星光璀璨的核心。
Credit: ESA/Hubble & NASA
#nasa #space #hubble #spothubble #galaxy #universe#solarsystem #bright #stars #lightyears #science#pictureoftheday #spiral #flat #galaxies #picoftheday
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