Chinese Researchers Discover Ancient Beaches on Mars

- Chinese rover Zhurong uncovers evidence of a 3.5 million-year-old ocean with adjacent beaches on Mars, shedding light on the planet's water history.

Discovery of Ancient Beaches on Mars

The Chinese rover Zhurong made a remarkable discovery on Mars, revealing that over 3.5 million years ago, an ocean with adjacent beaches existed on the planet. The sand beaches, with an angle of approximately fifteen degrees, bear resemblance to those on Earth. The sand deposits indicate the presence of waves in the ancient Martian sea, with particle sizes matching that of sand grains.

Zhurong utilized its ground-penetrating radar to search for further evidence of the underground ocean. Geologist Hai Liu from the University of Guangzhou stated that the southern Utopia Planitia, where Zhurong landed in May 2021, is believed to have once been an ancient ocean.

Michael Manga, a professor of Earth and planetary sciences at the University of California, expressed surprise at the findings, as the structures did not align with sand dunes, impact craters, or lava flows. The discovery led researchers to consider the possibility of ancient oceans, as the layout corresponds to what the ancient coastline might have been.

The presence of these beach-like features indicates a prolonged water cycle on Mars, suggesting the existence of large water bodies in the planet's northern lowlands. Geologist Benjamin Cardenas highlighted that these hidden coastlines are potential sites to search for evidence of past life, as early life on Earth is thought to have originated in similar environments near the interface of air and shallow water.

While Mars' current temperature of around -60 degrees Celsius makes beaches nearly unimaginable, evidence suggests that water once flowed on the planet, possibly around 3.5 billion years ago when conditions may have been warmer. Zhurong's mission, lasting three Earth months, exceeded its intended duration before entering hibernation in 2022 to survive the Martian winter. Recent images from NASA's Mars Reconnaissance Orbiter indicate that Zhurong is stationary, likely due to excessive dust on its solar panels hindering energy production.

China joins the ranks of nations exploring Mars, following the Soviet Union and the United States. Alongside Zhurong, NASA's Perseverance and Curiosity rovers are actively conducting research on the red planet.