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What Mars Express just photographed in Shalbatana Vallis isn't just an ancient flood channel — it's the strongest topographic argument yet that Mars once held a real ocean

Summary by Space Daily
The European Space Agency’s Mars Express orbiter has returned a fresh portrait of one of the Red Planet’s most dramatic flood-carved regions, revealing a sprawling network of collapsed terrain, sediment-choked valleys and impact scars that record a violent chapter in Martian history. But the more consequential story sits in the channel’s destination. Shalbatana Vallis drains north toward Chryse Planitia, one of the lowest-lying basins on Mars an…
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2 Articles

New data transmitted by the European Space Agency's Mars Express orbiter sheds light on the northern segment of the Shalbatana Vallis, one of the largest riverbeds on Mars. Using the High-Precision Imager (HRSC), the ancient waterway was imaged with unprecedented detail. The Shalbatana Vallis, which extends for 1,300 kilometers, runs along the equatorial belt, connecting the Xanthe Terra highlands... The post "Shalbatana Vallis on Mars: A Chaoti…

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Space Daily broke the news in Australia on Saturday, May 16, 2026.
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