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Plot: In 2088, when the Earth is heavily polluted and the atmosphere is becoming unbreathable, title starship is launched to investigate whether a planet in a solar system some eighteen light years from Earth would be suitable as a new home for the human race, which would migrate there en mass, a process that would take several decades, as forty years would be required to build the fleet of starships needed. This planet, called Demeter (the Greek goddess of corn, grain and the harvest) was discovered by an earlier mission which took some fuzzy video footage and sent it back to Earth before vanishing without trace