天文学家发现了一种新型恒星。 Astronomers discover a new type of star.

天文学家发现了一种隐藏在银河系中心的新型恒星，被称为“老烟民”。 Astronomers have discovered a new type of star, dubbed "old smokers", hidden in the center of our galaxy. 这些恒星被认为是一种新型红巨星，当恒星耗尽核聚变所需的氢并开始死亡时，就会形成红巨星。 These stars were identified as a new kind of red giant, which form when stars have exhausted their hydrogen supply for nuclear fusion and begin to die. 该团队研究了其中七个恒星物体，并将新数据与之前的调查进行了比较，得出了这一发现。 The team studied seven of these stellar objects and compared the new data with previous surveys to make this discovery. 大约五六十亿年后，我们的太阳预计将成为一颗红巨星，不断膨胀并释放出物质层。 In about 5 or 6 billion years, our sun is expected to become a red giant, expanding and releasing layers of matter.