From this you can calculate the total mass in the Galaxy.由此你可以算出銀河系的總質量。The Galaxy consists of 100 billion stars.銀河系由1,000億顆恒星組成。a galaxy of Hollywood stars好萊塢影星的薈萃...
Astronomers have discovered a distant galaxy.天文學家們發(fā)現(xiàn)了一個遙遠的星系。The Galaxy consists of 100 billion stars.銀河系由1,000億顆恒星組成。The spaceman flew through the galaxy at the speed of light.太空人以光速穿越銀河系.We report Chandra observations ...