Foreword / Giovanni Bignami
Half a century of projects
2. Reasons for human Mars exploration
3. Mars and its satellites
4. Space environment and radiations
6. Interplanetary journey to Mars
11. Timeframe and roadmap
12. A look to a more distant future
Appendix A: Positions of the planets
Appendix B: Impulse trajectories
Appendix C: Low thrust trajectories
Appendix D: Locomotion on Mars.