1. こうねん   light years   meteorite   telescope   Earth   Hint Half-n-half Clue   2. うちゅう   atmosphere   solar system   moon   universe   Half-n-half Clue   3. てんぶんがくしゃ   outer space   astronomer   planet   meteor   Half-n-half Clue   4. たいき   astronaut   atmosphere   outer space   satellite   Half-n-half Clue   5. いんせき   Sun   meteorite   satellite   moon   Half-n-half Clue   6. たいようけい   orbit   solar system   star   comet   Half-n-half Clue   7. きどう   orbit   galaxy   light years   outer space   Half-n-half Clue