The scans were made by NASA's Mars Reconnaissance Orbitor (Image: NASA)
The flood channels were buried beneath lava flows in Elysium Planitia region (Image: NASA)
While you may be aware of NASA's historic Curiosity mission (and the current problems it's facing), you might not have heard of the Mars Reconnaissance Orbiter, or MRO. The craft has been in orbit around the Red Planet since 2006 and its latest research, a 3D scan of a huge underground channel system, has provided researchers with an insight into the planet's recent hydrologic activity.
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