| A | B |
| Space Probe | Sent in space in dangerous places that never comes back |
| Satellite | The object that orbits another object |
| Orbit | When something circles something else |
| Artificial Satellite | Something man made that orbits something else (Ex: Sputnik) |
| Natural Satellite | Something natural that orbits something else (Ex: Moon, Planets) |
| Sputnik | The first artificial satellite (Russian) |
| Yuri A. Gagarin | First human in space ever (Russian) - survived |
| Russians | America’s biggest competition |
| Alan B. Shepard | First American in space |
| Sally Ride | First American woman in space |
| John Glenn | First American to orbit the Earth |
| Neil Armstrong | First human (American) to step on the moon |
| Edwin “Buzz” Aldrin | 2nd human (American) to step on moon after Armstrong |
| Michael Collins | On mission with Armstrong and Aldrin – was pilot – never stepped on moon |
| Christa McAuliffe | First American teacher planned to go to space |
| Project Mercury | Mission to get into space and orbit the Earth |
| Project Gemini | Mission to connect in space for fuel or lunar lander |
| Project Apollo | Mission to actually get us to the Moon and land on it |
| Space Shuttle | This was a “reusable” spacecraft/airplane used to save money |
| Astronomers across the Earth today | We work together to learn faster and share |
| Guion Bluford | First African American in Space |