Geological Study Reveals Ancient Martian Ocean Covering Half the Planet

Geologists have used data from multiple Mars probes to identify what appears to be an ancient shoreline on the Red Planet. Their analysis suggests that approximately three billion years ago, Mars may have possessed a vast ocean covering about half its surface, comparable in size to Earth's Arctic Ocean. This finding comes from mapping potential coastal formations using information gathered by various spacecraft studying Martian geology. The research provides evidence supporting theories about Mars having substantial bodies of water in its distant past, which has implications for understanding the planet's climate history and potential for ancient life.