1. lune   meteorite   moon   solar system   astronomer   Hint Half-n-half Clue   2. satellite   planet   galaxy   telescope   satellite   Half-n-half Clue   3. astronaute   planet   gravity   astronaut   asteroid   Half-n-half Clue   4. terre   Earth   satellite   star   meteor   Half-n-half Clue   5. étoile   astronaut   meteorite   astronomer   star   Half-n-half Clue   6. soleil   astronaut   universe   Sun   planet   Half-n-half Clue   7. astronome   satellite   galaxy   orbit   astronomer   Half-n-half Clue