1. 飛星   Sun   meteor   Earth   planet   Hint Half-n-half Clue   2. 隕石   Sun   meteorite   gravity   universe   Half-n-half Clue   3. 光年   solar system   star   light years   astronaut   Half-n-half Clue   4. 月亮   light years   moon   astronaut   gravity   Half-n-half Clue   5. 衛星   universe   star   satellite   astronaut   Half-n-half Clue   6. 小行星   atmosphere   asteroid   Earth   astronaut   Half-n-half Clue   7. 星   comet   solar system   astronaut   star   Half-n-half Clue