Recent research reveals that Mars likely had a northern ocean 3.6 billion years ago, based on data from China's Zhurong rover. This study, published in PNAS, identifies coastal sedimentary deposits that resemble Earth's beaches, indicating dynamic interactions between land and water. Scientists highlighted these findings as significant in understanding ancient habitable environments. The discovery included radar data showing layered rock formations, hinting at a history of ocean waves and potential microbial habitats on ancient Mars.
When we look back at where the earliest life on Earth developed, it was in the interaction between oceans and land, so this is painting a picture of ancient habitable environments, capable of harboring conditions friendly toward microbial life. Cardenas said.
Analysis of radar data indicated 'foreshore deposits' similar to beaches on Earth with sediments. The research indicates the presence of 'coastal sedimentary deposits formed by ancient ocean waves and possibly composed of sand and pebble gravels transported by tidal currents.' per the study.
Contributing author Michael Manga mentioned the research showed 'classic indications of sloping, sandy beaches lining an ocean.', reinforcing the evidence of a past dynamic marine environment on Mars.
Driving the news: A team of Chinese and U.S. researchers identified hidden layers of rock under Mars' surface that strongly suggested the presence of a past northern ocean.
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