1. meteor   yue liang   fei xing   wai ceng [kong;kong] [jian;jian]   yun [dan;shi]   Hint Half-n-half Clue   2. satellite   yun [dan;shi]   wei xing   yue liang   wai ceng [kong;kong] [jian;jian]   Half-n-half Clue   3. moon   yue liang   tai yang [xi;ji]   [zhong;chong] li   gui dao   Half-n-half Clue   4. Earth   xing   [di] qiu   xing [xi;ji]   wang yuan jing   Half-n-half Clue   5. orbit   yu zhou   [zhong;chong] li   gui dao   wai ceng [kong;kong] [jian;jian]   Half-n-half Clue   6. comet   wai ceng [kong;kong] [jian;jian]   yu hang [yuan]   xing   hui xing   Half-n-half Clue   7. astronomer   tai yang   fei xing   tian wen xue [jia]   [di] qiu   Half-n-half Clue