Astronomical predictions for the 23rd century In the early 23rd century Pluto will switch ranking with Neptune and become the 8th planet from the sun. August 28, 2287 - Mars and Earth come very close, the closest since August 27, 2003. Science Fiction set in the 23rd century Babylon 5, a TV-series set in the mid 23rd century Satellite Night trilogy, by Nick Pollotta The Glass Bead Game, a novel by Hermann Hesse The Fortune Call, a novel by Raphael Carter Zardoz, a movie in a post-apocalyptic 23rd century Star Trek: The Original Series Star Trek: The Animated Series Starcraft, a computer game set in the late 23rd century