All chips in the 2001: A Poker Odyssey set have a common obverse (Buzz Aldrin holding Presto) with a different scene for each face featuring a space scene and a “Prestolith” (our version of a monolith). Notice also that there are 2 forms of the Prestolith.
Next set: 2002: Rocks
Previous set: 2000: QB Edition, or 2000: The Year of RGP (produced in 2001)