1. astéroïde   planet   telescope   comet   asteroid   Hint Half-n-half Clue   2. satellite   galaxy   satellite   astronomer   comet   Half-n-half Clue   3. lune   moon   Earth   light years   comet   Half-n-half Clue   4. univers   telescope   universe   asteroid   astronaut   Half-n-half Clue   5. années légères   light years   Sun   universe   satellite   Half-n-half Clue   6. orbite   astronomer   outer space   atmosphere   orbit   Half-n-half Clue   7. astronaute   astronaut   asteroid   satellite   outer space   Half-n-half Clue