比賽規(guī)則:

Scientists predict that as the world's population grows and humanity over-consumes the planet's resources, the Earth has only enough energy to sustain human life for 300 to 500 years.

Thereafter, humanity will have to abandon Earth and migrate to other planets. For now, the only planet that humans have the best hope of migrating to is Mars. Therefore, space exploration is bound to become a compulsory course for humans in the future. 

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