| Answer | Crossword Clue |
|---|---|
| YEAGER | First supersonic human |
| YURIGAGARIN | First human in space |
| ABEL | First human to die |
| GAGARIN | First human to orbit the Earth |
| EDEN | Site of the first human sin |
| LUIS | First human character on "Sesame Street" |
| STONEAGE | First known period of human culture. |
| ABEL | First human to die in the Bible |
| CAIN | First human born, according to the Bible |
| ALAN | First name of the second human in space |
| ABEL | First human to die, according to the Bible |
| ALEXEI | Cosmonaut Leonov, the first human to walk in space |
