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Dark streaks on Mars may not come from water after all, scientists sayF irst identified in the 1970s by NASA's Viking mission, long, dark markings snake down Martian slopes, sometimes stretching ...
Water is considered an essential ingredient for life. Mars billions of years ago was wetter and warmer than it is today. The ...
2don MSNOpinion
Images taken of Mars from orbit dating back as far as the 1970s have captured curious dark streaks running down the sides of ...
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