Spacecraft visitation Mars

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once spacecraft visited planet during nasa s mariner missions in 1960s , 70s, these concepts radically broken. results of viking life-detection experiments aided intermission in hypothesis of hostile, dead planet accepted.


mariner 9 , viking allowed better maps of mars made using data these missions, , major leap forward mars global surveyor mission, launched in 1996 , operated until late 2006, allowed complete, extremely detailed maps of martian topography, magnetic field , surface minerals obtained. these maps available online; example, @ google mars. mars reconnaissance orbiter , mars express continued exploring new instruments, , supporting lander missions. nasa provides 2 online tools: mars trek, provides visualizations of planet using data 50 years of exploration, , experience curiosity, simulates traveling on mars in 3-d curiosity.









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