1. Tierra   comet   galaxy   meteorite   Earth   Hint Half-n-half Clue   2. años luz   light years   meteorite   astronaut   atmosphere   Half-n-half Clue   3. espacio exterior   telescope   astronomer   outer space   astronaut   Half-n-half Clue   4. asteroide   asteroid   outer space   satellite   atmosphere   Half-n-half Clue   5. astronauta   atmosphere   gravity   astronaut   outer space   Half-n-half Clue   6. astrónomo   astronomer   outer space   Sun   astronaut   Half-n-half Clue   7. meteoro   meteorite   meteor   moon   gravity   Half-n-half Clue