The New Mars. The Discoveries of Mariner 9 NASA SP-337

The Mariner 9 encounter with Mars is extensively documented with photographs taken by the satellite's onboard cameras, and an attempt is made to explain the observed Martian topography in terms of what is known about the geomorphological evolution of the earth. Early conceptions about the Mars surface are compared with more recent data made available by the Mariner 9 cameras. Other features of the planet Mars which are specifically discussed include the volcanic regions, the surface channels, the polar caps and layered terrain, the Martian atmosphere, and the planet's two moons--Phobos and Deimos. Front Cover 01 MARS BEFORE MARINER 02 SUMMARY OF THE CHANGING FACE OF MARS 03 EARLY MARINERS AND THE PROFILE OF THE MARINER 9 MISSION 04 MARS ENCOUNTER AND THE GREAT DUST STORM OF 1971 05 THE CLASSICAL MARKINGS: TOWARD AN EXPLANATION 06 THE ANCIENT CRATERED TERRAIN 07 THE VOLCANIC REGIONS 08 CHANNELS AND THE EVIDENCE FOR ANCIENT RIVERS 09 POLAR CAPS AND LAYERED TERRAIN 10 THE ATMOSPHERE 11 THE SHAPE AND GLOBAL GEOLOGY OF MARS 12 PHOBOS AND DEIMOS 13 SUMMARY: NEW HORIZONS APPENDIX A-AVAILABILITY OF MARINER 9 PHOTOGRAPHS APPENDIX B-MARINER 9 TELEVISION SCIENCE DISCIPLINE AND Task GROUPS APPENDIX C-PUBLICATIONS RESULTING FROM MARINER 9 INDEX