Copyright:
原文:
Almost every object in the above photograph is a galaxy. The Coma Cluster of Galaxies pictured above is one of the densest clusters known – it contains thousands of galaxies. Each of these galaxies houses billions of stars – just as our own Milky Way Galaxy does. Although nearby when compared to most other clusters, light from the Coma Cluster still takes hundreds of millions of years to reach us. In fact, the Coma Cluster is so big it takes light millions of years just to go from one side to the other! The above mosaic of images of a small portion of Coma was taken in unprecedented detail in 2006 by the Hubble Space Telescope to investigate how galaxies in rich clusters form and evolve. Most galaxies in Coma and other clusters are ellipticals, although some imaged here are clearly spirals. The spiral galaxy on the upper left of the above image can also be found as one of the bluer galaxies on the upper left of this wider field image. In the background thousands of unrelated galaxies are visible far across the universe.
中文翻譯:
幾乎每一件物件在這張照片中都是一個星系。上面的圖像顯示了著名的Coma星系團，這是已知最密集的星系團之一，包含了數以千計的星系。這些星系中也住著數十億顆星星，就像我們的銀河系一樣。儘管比起其他星系團來說，Coma星系團算是比較靠近我們，但從這裡發出的光仍然要花數億年才能到達我們的眼前。事實上，Coma星系團如此龐大，光線在其一側到另一側也要花上數百萬年的時間！
這張關於Coma的部分的馬賽克圖像是由哈勃太空望遠鏡於2006年拍攝的，旨在研究富集星系團中星系的形成與演化。大多數在Coma及其他星系團中的星系是橢圓形的，儘管這裡拍攝的某些星系明顯是螺旋形的。在上方圖像的左上角，可以看到一個螺旋星系，且在這張較廣泛的圖像中也可以找到它，這個星系是上方圖像中較藍色的星系之一。在背景中，還可以看到數千個不相關的星系，在宇宙的遙遠地方閃爍著。
#Coma星系團 #哈勃太空望遠鏡 #星系 #宇宙之美 #天文學 #星際旅行 #銀河系 #探索宇宙 #科學發現 #星系研究
來源:NASA每日圖片
