1. astronomo   meteor   astronomer   orbit   comet   Hint Half-n-half Clue   2. atmosfera   comet   atmosphere   orbit   light years   Half-n-half Clue   3. universo   universe   astronaut   meteor   orbit   Half-n-half Clue   4. anni chiari   atmosphere   light years   meteor   moon   Half-n-half Clue   5. meteora   outer space   meteor   astronomer   solar system   Half-n-half Clue   6. luna   moon   astronomer   gravity   meteorite   Half-n-half Clue   7. sole   light years   meteorite   Sun   astronomer   Half-n-half Clue