1. terre   gravity   satellite   Earth   comet   Hint Half-n-half Clue   2. espace intersidéral   outer space   galaxy   solar system   Sun   Half-n-half Clue   3. lune   galaxy   moon   astronomer   asteroid   Half-n-half Clue   4. gravité   telescope   Earth   asteroid   gravity   Half-n-half Clue   5. étoile   galaxy   star   universe   meteor   Half-n-half Clue   6. univers   universe   Earth   meteor   Sun   Half-n-half Clue   7. planète   comet   telescope   meteorite   planet   Half-n-half Clue