1. sole   Sun   planet   galaxy   meteorite   Hint Half-n-half Clue   2. universo   galaxy   universe   planet   outer space   Half-n-half Clue   3. asteroid   Sun   universe   asteroid   solar system   Half-n-half Clue   4. astronomo   astronomer   asteroid   comet   solar system   Half-n-half Clue   5. stella   telescope   satellite   Sun   star   Half-n-half Clue   6. sistema solare   solar system   outer space   astronomer   galaxy   Half-n-half Clue   7. gravità   solar system   Earth   gravity   satellite   Half-n-half Clue