This short report explains and details the Mars Direct plan. Why should we explore Mars? In debating an answer to this question, the space community has revealed a deep divide: one that extends beyond policy to ouch at the basic meaning of exploration and other side a scientific vision of Mars, with a focus on telerobotic exploration, may not excite the public to the same extent as human missions. Our present-day understanding of Mars, which drives the human scientific goals and objectives, is summarized.

Key words: Human mission, Mars