1. gravité   satellite   meteorite   outer space   gravity   Hint Half-n-half Clue   2. astéroïde   asteroid   astronaut   meteorite   astronomer   Half-n-half Clue   3. univers   meteor   asteroid   light years   universe   Half-n-half Clue   4. étoile   star   Earth   meteorite   universe   Half-n-half Clue   5. années légères   satellite   light years   meteor   moon   Half-n-half Clue   6. espace intersidéral   light years   solar system   outer space   meteorite   Half-n-half Clue   7. astronaute   star   astronaut   astronomer   atmosphere   Half-n-half Clue