Mars: Was the red planet once blue?

Most astrophysicists agree that liquid water once existed on Mars. What is in dispute, however, is how much water it was in. In a new analysis, a research team from the University of Copenhagen concludes that the planet could have been covered by an ocean 300 meters deep some 4.5 billion years ago. the study It was published in the journal “Science Advances”. released. Was the Red Planet once blue in color and might have harbored life?


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