1. comet   Komet   Atmosphäre   Sonne   Mond   Hint Half-n-half Clue   2. light years   helle Jahre   Erde   Asteroid   Atmosphäre   Half-n-half Clue   3. solar system   Atmosphäre   Asteroid   helle Jahre   System Sonnen   Half-n-half Clue   4. moon   Mond   Schwerkraft   helle Jahre   Satellit   Half-n-half Clue   5. gravity   Astronom   Umlaufbahn   Atmosphäre   Schwerkraft   Half-n-half Clue   6. Earth   Astronaut   Erde   Satellit   Galaxie   Half-n-half Clue   7. star   Astronaut   Teleskop   Meteorit   Stern   Half-n-half Clue