1. Sonne   planet   Sun   moon   astronaut   Hint Half-n-half Clue   2. Stern   Earth   star   outer space   orbit   Half-n-half Clue   3. Weltraum   planet   universe   outer space   atmosphere   Half-n-half Clue   4. Planet   solar system   gravity   comet   planet   Half-n-half Clue   5. Komet   solar system   astronaut   comet   atmosphere   Half-n-half Clue   6. Erde   meteor   moon   star   Earth   Half-n-half Clue   7. System Sonnen   astronaut   galaxy   comet   solar system   Half-n-half Clue