1. moon   System Sonnen   Mond   Weltraum   Schwerkraft   Hint Half-n-half Clue   2. asteroid   Astronaut   Sonne   Asteroid   Astronom   Half-n-half Clue   3. astronaut   helle Jahre   Astronaut   Erde   Asteroid   Half-n-half Clue   4. star   Meteor   Stern   Mond   Meteorit   Half-n-half Clue   5. orbit   Sonne   Mond   Astronaut   Umlaufbahn   Half-n-half Clue   6. gravity   Schwerkraft   Sonne   Asteroid   Weltraum   Half-n-half Clue   7. light years   Atmosphäre   Erde   helle Jahre   Asteroid   Half-n-half Clue