Space imagery is revealing water and methane rivers past and present.
Though Mars’ water networks dried up long ago, Titan’s liquid methane and ethane rivers are still coursing on the moon’s surface today. Both kinds are of scientific interest because they could reveal the role rivers play in shaping the worlds’ environments. Given water’s role in supporting life as we know it, the waterways and—er, hydrocarbonways—may yet clue researchers into signs of life beyond Earth.
. “What’s exciting about Titan is that it’s active. With this technique, we have a method to make real predictions for a place where we won’t get more data for a long time.”
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