Exploration of Mars – a Timeline

1992 MARS OBSERVER (orbiter) Coms lost prior to orbit insertion

1996 PATHFINDER (lander) and SOJOURNER (rover) – images sent, chemical analysis of surface, water likely (coms lost after 3 months)

1996 MARS GLOBAL SURVEYOR (orbiter) – repeatable weather patterns, not global, but local magnetic field, CO2 ice at polar cap

1998 MARS CLIMATE ORBITER (orbiter) – Lost on arrival

1999 MARS POLAR LANDER (lander) – Lost on arrival

1999 DEEP SPACE 2 (probe) – Lost on arrival

Probe

Probe

Probe

Probe