1. satellite   Sun   moon   astronomer   satellite   Hint Half-n-half Clue   2. luna   galaxy   atmosphere   universe   moon   Half-n-half Clue   3. Spazio cosmico   orbit   outer space   Earth   gravity   Half-n-half Clue   4. sistema solare   satellite   meteor   universe   solar system   Half-n-half Clue   5. telescopio   telescope   comet   universe   astronomer   Half-n-half Clue   6. sole   outer space   atmosphere   meteorite   Sun   Half-n-half Clue   7. atmosfera   atmosphere   astronaut   comet   galaxy   Half-n-half Clue