1. astronomer   Erde   Atmosphäre   Weltraum   Astronom   Hint Half-n-half Clue   2. atmosphere   Satellit   Schwerkraft   Stern   Atmosphäre   Half-n-half Clue   3. solar system   Atmosphäre   Sonne   System Sonnen   Mond   Half-n-half Clue   4. star   Umlaufbahn   Schwerkraft   Asteroid   Stern   Half-n-half Clue   5. planet   Teleskop   System Sonnen   Planet   Komet   Half-n-half Clue   6. Sun   Sonne   Planet   Komet   Teleskop   Half-n-half Clue   7. satellite   Schwerkraft   Satellit   Asteroid   Galaxie   Half-n-half Clue