1. comet   Weltraum   Sonne   Teleskop   Komet   Hint Half-n-half Clue   2. astronomer   Teleskop   Meteor   Satellit   Astronom   Half-n-half Clue   3. gravity   Planet   Schwerkraft   System Sonnen   Galaxie   Half-n-half Clue   4. atmosphere   Atmosphäre   Meteor   Astronaut   Erde   Half-n-half Clue   5. universe   Galaxie   Weltall   Satellit   Schwerkraft   Half-n-half Clue   6. Earth   helle Jahre   Erde   Astronom   Astronaut   Half-n-half Clue   7. meteor   Stern   Asteroid   Meteor   Galaxie   Half-n-half Clue