1. satellite   stella   meteorite   satellite   cometa   Hint Half-n-half Clue   2. orbit   luna   orbita   galassia   stella   Half-n-half Clue   3. atmosphere   galassia   atmosfera   stella   gravità   Half-n-half Clue   4. meteor   orbita   meteora   asteroid   Spazio cosmico   Half-n-half Clue   5. asteroid   Spazio cosmico   satellite   asteroid   orbita   Half-n-half Clue   6. astronomer   astronomo   terra   astronauta   satellite   Half-n-half Clue   7. moon   cometa   Spazio cosmico   luna   sistema solare   Half-n-half Clue