1. atmosphere   tian wen xue [jia]   hui xing   yu zhou   [da;dai] qi   Hint Half-n-half Clue   2. telescope   wai ceng [kong;kong] [jian;jian]   xing   wang yuan jing   xing [xi;ji]   Half-n-half Clue   3. comet   tian wen xue [jia]   hui xing   yue liang   wei xing   Half-n-half Clue   4. meteor   fei xing   xing [xi;ji]   tian wen xue [jia]   xing   Half-n-half Clue   5. meteorite   [xing;hang] xing   yun [dan;shi]   wai ceng [kong;kong] [jian;jian]   wei xing   Half-n-half Clue   6. satellite   [da;dai] qi   xiao [xing;hang] xing   wei xing   wai ceng [kong;kong] [jian;jian]   Half-n-half Clue   7. solar system   wei xing   guang nian   yu hang [yuan]   tai yang [xi;ji]   Half-n-half Clue