| Answer | Crossword Clue |
|---|---|
| GLENN | Mercury astronaut |
| GUS | Mercury astronaut Grissom |
| SEVEN | Mercury astronaut complement |
| ALAN | Mercury astronaut Shepard |
| SLAYTON | Mercury astronaut Deke |
| DEKE | Mercury Seven astronaut Slayton |
| GUS | Mercury Seven astronaut Grissom |
| SLAYTON | Mercury Seven astronaut Deke |
| GORDO | Mercury and Gemini astronaut, informally |
| GORDO | Nickname for Mercury astronaut Cooper |
| GUS | Fellow astronaut of Deke in Project Mercury |
