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    Mars Used To Have Oceans And They Could Have Looked Like This

    The Red Planet wasn't so red four billion years ago.

    Four billion years ago Mars would have been warm enough to support liquid water.

    Which means OCEANS.

    View this video on YouTube

    This video is an artist's impression of what the surface of the planet might have looked like when it was young. It shows how, eventually, Mars dried up and turned into the cold and dusty red planet we know today.