| Answer | Crossword Clue |
|---|---|
| SKYLAB | First U.S. space station |
| SKYLAB | U.S. space station |
| SKYLAB | Original U.S. space station |
| KDKA | First commercial U.S. radio station, located in Pittsburgh |
| SHEPARD | First U.S. space traveler |
| RIDE | First U.S. woman in space |
| MICE | First space travelers from U.S. |
| APOLLOSOYUZ | First joint flight of the U.S. and Soviet space programs |
