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Viking 1 & 2's purpose was to find life signs on Mars. They didn't find any life but found signs of life from along time. The signs of life were: they found signs of water wich can mean life was there and vast flooding of creators in the Martian soil.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.