1. planeta   galaxy   planet   light years   Earth   Hint Half-n-half Clue   2. meteorito   meteorite   Earth   solar system   planet   Half-n-half Clue   3. Tierra   light years   Earth   satellite   meteor   Half-n-half Clue   4. sol   meteor   Sun   astronaut   solar system   Half-n-half Clue   5. órbita   moon   asteroid   orbit   meteorite   Half-n-half Clue   6. galaxia   universe   galaxy   atmosphere   orbit   Half-n-half Clue   7. gravedad   moon   gravity   astronomer   astronaut   Half-n-half Clue