Mars Wasn’t Always Dry: It Once Had Rivers Spanning Over 15,000 Kilometers
Great Discoveries Channel   2 days ago
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Mars Wasn’t Always Dry: It Once Had Rivers Spanning Over 15,000 Kilometers  The Daily GalaxyA new Martian climate model suggest a mostly cold, harsh environment  Ars TechnicaDiscovery of ancient riverbeds suggests Mars once wetter than thought  The...