1. astronome   comet   star   astronomer   astronaut   Hint Half-n-half Clue   2. comète   comet   outer space   meteorite   moon   Half-n-half Clue   3. télescope   universe   telescope   planet   star   Half-n-half Clue   4. système solaire   satellite   astronomer   solar system   planet   Half-n-half Clue   5. étoile   comet   Earth   orbit   star   Half-n-half Clue   6. terre   Earth   universe   telescope   asteroid   Half-n-half Clue   7. satellite   satellite   star   asteroid   meteor   Half-n-half Clue