| Answer | Crossword Clue |
|---|---|
| NASA | Space-exploration org. |
| SETI | Space exploration org. |
| NASA | Space exploration org. |
| SETI | Space exploration acronym |
| PROBE | Space exploration vehicle |
| BOOSTERS | Stages of space exploration |
| YURI | First name in space exploration |
| astronautics | The science and technology of human space travel and exploration |
