| Clue | Source | Date |
|---|---|---|
| Subtitle of the numerically named 1968 movie in which Keir Dullea starred as astronaut David Bowman | ||
| 2001: __, 1968 sci-fi movie by Stanley Kubrick | The Guardian Weekend | 01 Jul 2023 |
| Titular adventure of a '68 film | Newsday | 04 Sep 2021 |
| *Long voyage for an expert fighter pilot? | The Washington Post Sunday | 17 Mar 2019 |
| "2001" subtitle | ||
| Film's self-summary |