1. asteroid   moon   asteroid   outer space   astronomer   Hint Half-n-half Clue   2. astronauta   atmosphere   star   astronaut   gravity   Half-n-half Clue   3. sistema solare   galaxy   solar system   meteor   light years   Half-n-half Clue   4. satellite   meteorite   satellite   Earth   atmosphere   Half-n-half Clue   5. galassia   meteorite   outer space   galaxy   gravity   Half-n-half Clue   6. meteora   Sun   universe   meteor   star   Half-n-half Clue   7. orbita   Earth   moon   outer space   orbit   Half-n-half Clue