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As NASA lays plans for travel to the moon and Mars, the agency is exploring propulsion systems, crew modules, and habitat structures. It has looked at the psychology of being cooped up with fellow astronauts for a years-long Mars mission, and studied how to maintain bone structure and muscle strength in microgravity.
- To say in too many words; to express verbosely.
- To express in too many words: sometimes used reflexively.
- The leading idea or a repeated phrase, as of a song or ballad; the refrain; burden.