1. orbite   satellite   orbit   galaxy   gravity   Hint Half-n-half Clue   2. système solaire   moon   gravity   outer space   solar system   Half-n-half Clue   3. espace intersidéral   outer space   atmosphere   telescope   meteor   Half-n-half Clue   4. étoile   Earth   star   meteorite   light years   Half-n-half Clue   5. galaxie   satellite   galaxy   planet   meteor   Half-n-half Clue   6. astronaute   Earth   astronaut   planet   outer space   Half-n-half Clue   7. satellite   atmosphere   astronaut   satellite   galaxy   Half-n-half Clue