Theories
Scientists and Theorists will not give up on the Martian question of life. Many cling to the notion that Mars might be a dead planet that once sustained life. Gradually ideas are eliminated only to be replaced by new ones. The hope of 'once there was life.' remains and so many explorations and experiments remain. Unmanned space craft are sent to scratch the surface and find evidence of 'once there was life.'
Questions
Some of the rock formations puzzle geologists and pose questions that once water might have been there. Why did it all end if the planet was once on the journey to evolve carbon based lifeforms. Perhaps a violent ecological disaster might be the reason for the sterile landscape that teases of 'once there was life.'
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