| A | B |
|---|
| astronaut | a person trained to participate in the flight of a spacecraft |
| launches | puts into action by force |
| mission | an operation that is assigned to achieve certain goals |
| orbit | the path of a spacecraft around the earth |
| reusable | able to be used again |
| satellite | a device made to orbit the earth while performing a task |
| space shuttle | a spacecraft launched like a rocket that can return to earth and land like a plane |
| specialist | one who becomes an expert in a certain field |
| weightlessness | the condition of being without weight |
| demanding | requiring a lot of effort or hard work |
