1. gravità   Earth   meteor   gravity   Sun   Hint Half-n-half Clue   2. universo   gravity   galaxy   universe   meteor   Half-n-half Clue   3. astronauta   astronaut   satellite   galaxy   Earth   Half-n-half Clue   4. astronomo   atmosphere   astronomer   universe   astronaut   Half-n-half Clue   5. meteora   atmosphere   universe   asteroid   meteor   Half-n-half Clue   6. atmosfera   moon   meteor   satellite   atmosphere   Half-n-half Clue   7. meteorite   gravity   solar system   meteorite   orbit   Half-n-half Clue