| A | B |
|---|
| NASA | National Aeronautics & Space Administration |
| Orbit | the curved path taken by a planet, satellite, spaceship, etc around the sun |
| Sputnik I | 1st artificial satellite to orbit Earth - launched by Soviet Union |
| Satellite | the moon is Earth's natural satellite |
| Ambitious | requiring exceptional effort |
| Apollo 11 | Neil Armstrong was the 1st to set foot on the moon during this mission |
| Module | piece that carried astronauts to the moon's surface, then back to earth |
| Mission Control | dozens of engineers work 24 hrs/day monitoring all systems and health of crew members |
| Dramatic | highly effective, striking |
| Apollo Project | series of space flights dedicated to getting American Astronauts to the moon |
