1. tai yang   star   telescope   galaxy   Sun   Hint Half-n-half Clue   2. wang yuan jing   meteorite   orbit   telescope   gravity   Half-n-half Clue   3. xing [xi;ji]   universe   meteor   Earth   galaxy   Half-n-half Clue   4. gui dao   light years   solar system   telescope   orbit   Half-n-half Clue   5. yun [dan;shi]   solar system   meteorite   planet   Sun   Half-n-half Clue   6. [da;dai] qi   universe   gravity   satellite   atmosphere   Half-n-half Clue   7. wai ceng [kong;kong] [jian;jian]   moon   star   outer space   gravity   Half-n-half Clue