1. planète   planet   asteroid   satellite   universe   Hint Half-n-half Clue   2. terre   galaxy   meteorite   Earth   astronomer   Half-n-half Clue   3. météore   astronaut   meteor   gravity   solar system   Half-n-half Clue   4. météorite   universe   meteorite   telescope   Earth   Half-n-half Clue   5. astronome   asteroid   planet   astronomer   satellite   Half-n-half Clue   6. satellite   star   light years   satellite   universe   Half-n-half Clue   7. système solaire   telescope   asteroid   solar system   light years   Half-n-half Clue