1. planet   galassia   pianeta   satellite   telescopio   Hint Half-n-half Clue   2. orbit   satellite   galassia   orbita   pianeta   Half-n-half Clue   3. outer space   Spazio cosmico   galassia   universo   asteroid   Half-n-half Clue   4. light years   satellite   telescopio   cometa   anni chiari   Half-n-half Clue   5. universe   asteroid   sole   luna   universo   Half-n-half Clue   6. galaxy   asteroid   cometa   galassia   anni chiari   Half-n-half Clue   7. comet   astronomo   anni chiari   sistema solare   cometa   Half-n-half Clue