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In the mission where you start looking for the AP Gunner, After scanning the broken gate and going down to Antigone Memorial Museum, on the fifth page of the computer screen where it mentions all the ships that passed through and their members, the crew of the ship in the movie "2001 Space Odyssey" is listed, along with good ol' HAL 9000. Their ship is named the AP Zarathustra. I thought that was kinda funny.