| A | B |
|---|
| astronaut | someone trained to fly a spacecraft |
| launches | sets in motion |
| mission | a project designed to reach certain goals |
| orbit | the path of an object in space |
| reusable | able to be used again |
| satellite | a device that orbits Earth |
| space shuttle | a reusable spacecraft that performs missions in space |
| specialist | expert |
| weightlessness | being without weight |
| artificial | created by humans rather that occuring in nature |
