Scientists Think These ‘Kidney Beans’ Could Prove That Mars Once Supported Life

Mars, the Red Planet, holds fascinating clues about its past. Recent HiRISE images reveal kidney bean-shaped dunes in Mars’ northern hemisphere, coated with CO2 frost. These dunes, frozen during winter, release CO2 gas in spring, offering insights into Mars’ climatic history. The planet's fluctuating axial tilt likely influenced its atmosphere, once thick enough to sustain liquid water and potentially life. Billions of years ago, Mars had rivers, lakes, and a warmer climate before losing its atmosphere to solar winds. These frozen dunes act as natural archives, guiding the search for ancient life and informing future missions to uncover Mars’ secrets