NASA rover detects some of the oldest evidence of water flowing on Mars
Using ground-penetrating radar, NASA's Perseverance rover has detected underground remains of an ancient stream delta on Mars in some of the
An illustrative image related to: NASA rover detects some of the oldest evidence of water flowing on Mars, highlighting key aspects of the story. | Image source: The Express Tribune
NASA rover detects some of the oldest evidence of water flowing on Mars
Using ground-penetrating radar, NASA's Perseverance rover has detected underground remains of an ancient stream delta on Mars in some of the oldest evidence yet obtained showing how water once flowed on the surface of Ground's planetary adjacent.
Researchers said the six-wheeled rover revealed geological features up to 115 feet (35 metres) underground while traversing 3.8 miles (6.1 km) of terrain inside Jezero Crater, an sector in the Martian northern hemisphere believed to have been flooded with water and home to an ancient pond basin long ago.
Perseverance identified layered sediments and eroded surfaces indicative of a delta environment, a sizable-scale fan-shaped deposit of sediment formed at the location where a stream enters a larger body of water like a pond. They estimated that the now-buried delta dates to about 3.7 to 4.2 billion years ago.
Mars, like Ground, formed roughly 4.5 billion years ago, meaning this delta existed relatively initial in its history. The researchers said this delta predated a similar nearby surface trait called the Western Delta that dates to about 3.5 to 3.7 billion years ago.
The rover's RIMFAX instrument sends radar pulses downward and records pulses bouncing back off underground features, allowing a three-dimensional mapping of the subsurface. The fresh findings were based on RIMFAX's deepest metrics collected to date, obtained from September 2023 to February 2024 over a span of 250 Martian days.
Since water is considered crucial to the possibility of previous life on Mars, the mounting evidence of its wet previous is of particular yield. Mars, now chill and desolate, long ago possessed a thicker atmosphere and warmer atmosphere, allowing for liquid water on its surface.
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