中文翻譯:
在很久很久以前，在宇宙裡有一個漂亮的漩渦星系，叫做Abell 2029。這個星系比我們的銀河系大了20倍，離我們有十億光年那麼遠！Abell 2029是由成千上萬的星系組成的，周圍圍繞著一大團熱氣，裡面有數百萬億倍太陽的質量是黑暗物質哦！這個漩渦星系裡主要是氫和氦的氣體，它們被加熱到好幾千萬度。科學家們最近用NASA的Chandra X射線天文台的數據發現，Abell 2029在四十億年前曾經與一個較小的星系團碰撞過！這次碰撞影響了引力場，就像酒杯裡的酒在搖晃一樣，讓這個神奇的漩渦有了今天的樣子。
原文:
This big beautiful spiral shines in X-ray light. It is about 20 times larger than our Galaxy. It belongs to Abell 2029, a galaxy cluster one billion light-years away. (To see only the galaxies, hover your cursor over the image, or follow this link.) Galaxy clusters are the largest structures in the universe that are supported by gravity. Abell 2029 is formed by thousands of galaxies, surrounded by a huge cloud of hot gas and the equivalent of hundreds of trillions times the mass of the Sun in dark matter. The spiral is made of gas, mostly hydrogen and helium, heated to tens of millions of degrees. It was found in a recent study that used data from NASA’s Chandra X-ray Observatory to show that Abell 2029 had a collision with a smaller cluster four billion years ago. The collision affected the gravitational field and caused the intracluster gas to slosh, like wine moving in a wine glass, shaping the spiral.
來源:NASA每日圖片
