1. astronauta   atmosphere   Earth   astronaut   Sun   Hint Half-n-half Clue   2. astrónomo   moon   orbit   planet   astronomer   Half-n-half Clue   3. sol   galaxy   Sun   meteor   planet   Half-n-half Clue   4. satélite   light years   satellite   Earth   meteor   Half-n-half Clue   5. meteorito   astronaut   atmosphere   meteorite   galaxy   Half-n-half Clue   6. cometa   planet   comet   galaxy   astronomer   Half-n-half Clue   7. Tierra   planet   Earth   comet   light years   Half-n-half Clue