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Loading contentA crewed outpost on Mars, the long-term goal of human deep-space exploration. Separated from Earth by months of travel and up to twenty minutes of communication delay, a Mars base must make its own propellant, water, and oxygen from local resources and sustain its crew with little hope of rescue.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.