1. atmosfera   meteor   galaxy   atmosphere   Earth   Hint Half-n-half Clue   2. galassia   astronaut   Earth   galaxy   light years   Half-n-half Clue   3. anni chiari   Earth   asteroid   light years   astronomer   Half-n-half Clue   4. cometa   atmosphere   astronomer   comet   meteorite   Half-n-half Clue   5. terra   astronaut   Earth   atmosphere   light years   Half-n-half Clue   6. gravità   gravity   meteor   astronomer   atmosphere   Half-n-half Clue   7. asteroid   Earth   astronaut   asteroid   meteor   Half-n-half Clue   FREE PREVIEW: Last 10 Questions not a part of the free preview. Get Premium Membership to view all questions.