The Pathfinder bot first went to Mars before a Martian probe called the Sojourner was deployed as part of the Pathfinder mission.
Planetary Science Institute Senior Scientist Alexis Rodriguez said: “Our paper shows a basin, with roughly the surface area of California, that separates most of the gigantic Martian channels from the Pathfinder landing site.
“Debris or lava flows would have filled the basin before reaching the Pathfinder landing site.
“The very existence of the basin requires cataclysmic floods as the channels’ primary formational mechanism.”
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