1. star   xing   [xing;hang] xing   hui xing   tian wen xue [jia]   Hint Half-n-half Clue   2. satellite   wang yuan jing   yue liang   wei xing   xiao [xing;hang] xing   Half-n-half Clue   3. Earth   [da;dai] qi   yue liang   [di] qiu   yu hang [yuan]   Half-n-half Clue   4. atmosphere   hui xing   yu hang [yuan]   guang nian   [da;dai] qi   Half-n-half Clue   5. astronaut   yu hang [yuan]   wei xing   yu zhou   xing   Half-n-half Clue   6. Sun   tai yang   wei xing   xing [xi;ji]   xing   Half-n-half Clue   7. astronomer   tai yang [xi;ji]   [di] qiu   fei xing   tian wen xue [jia]   Half-n-half Clue