A strong cosmic source of x-rays, E0102 was imaged by the Chandra X-ray Observatory shortly after its launch in 1999.

 
  • E0102是个明亮的宇宙X射线源,所以钱卓拉在1999年发射升空后不久,就曾观测过它。
今日热词
目录 附录 查词历史