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Ancient River Systems Reveal Mars Was Wetter than We Thought
MARS' NOACHIS TERRA, JUL 10 – Researchers mapped over 15,000 km of ancient riverbeds in Mars' Noachis Terra, supporting a long-lasting wet climate about 3.7 billion years ago, challenging prior dry Mars theories.
- Adam Losekoot and his team discovered over 15,000 kilometers of fluvial sinuous ridges in Mars' Noachis Terra at the Royal Astronomical Society's 2025 meeting in Durham.
- They searched for these ridges because Noachis Terra is underexplored and poorly incised by valley networks, which usually indicate ancient surface water.
- The extensive length and broad distribution of these inverted channels suggest that Mars experienced warm, wet, and relatively long-lived conditions around 3.7 billion years ago.
- Losekoot explained that their research provides fresh insights indicating Mars once had a significantly more dynamic and intricate environment than it does today, making this discovery particularly thrilling to be part of.
- This discovery challenges previous cold, dry Mars theories and supports the idea that precipitation, not just episodic meltwater, sustained stable surface water in this region.
19 Articles
19 Articles
This Martian Region Is Hiding Thousands of Kilometers of Ancient Rivers
In a dramatic new discovery, scientists have identified over 15,000 kilometers of ancient riverbeds on Mars, revealing that vast regions of the planet were once crisscrossed by flowing water. These winding ridges, preserved in the Martian highlands, suggest that rainfall—not just glacial melt—once played a major role in shaping the Red Planet’s surface. The findings, [...]
Mars Was Once Wet: Scientists Shocked by Massive Riverbed
Mars Riverbed Discovery Shocks Scientists: Evidence of Ancient Flowing Water Emerges Introduction: A New Clue in Humanity’s Search for Life NASA and European Space Agency (ESA) released high-resolution images which led scientists to discover deeply eroded riverbeds that prove Mars had flowing water billions of years ago. NASA and the European Space Agency (ESA) recently published images that demonstrate the existence of riverbeds on Mars which i…
Ancient Rivers in Noachis Terra Reveal Mars' Long-Lived Wet Past
In the last couple of decades, evidence has accumulated showing that ancient Mars was a warm planet with abundant water flowing across its surface. The more scientists study the planet, the more evidence they find. New research examining Mars' Noachis Terra region adds to this evidence, showing that flowing water was once widespread across this less-often studied region.
Scientists uncover 15,000 kilometers of lost rivers on Mars
Mars may not have always been the dry and dusty world we imagine. A staggering network of ancient riverbeds, spanning over 15,000 kilometers, has been discovered in the planet’s Noachis Terra region, suggesting that flowing water, fueled by precipitation, was once widespread. Unlike previously studied valley networks, these “inverted channels” reveal a long history of persistent water activity, challenging the idea that Mars was merely cold and …
Mars was considered a cold, dry planet with few water resources. New evidence could completely turn this theory upside down.
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