X2 - The Threat Easter Egg - Space Odyssey Reference

When the player is at the Antigone station, searching for details of the AP Gunner, go to page 5/5 and there will be a crew list, with people such as HAL 9000, and David Bowman. X2, being a space sim, naturally must have a reference to Arthur C Clarke's "A Space Odyssey."

The music of the opening scene of the movie (also sprach Zarathrustra) also share's the same name as the name of the ship in the game (AP Zarathustra).

The Black Crystal in the cargo hold is also an important plot item of X3: Reunion