| Answer | Crossword Clue |
|---|---|
| SPACEAGE | Period that began in 1957 |
| SPACERACE | Competition that began in 1957 |
| SPACEAGE | Era that began in 1957 |
| SPACEAGE | Period that began with Sputnik I's launch |
| IRONAGE | Period of human history that began about 3,000 years ago |
| SPACEAGE | It began in 1957 |
