Mars Habitability Breakthrough: NASA’s Curiosity and Perseverance Discover Complex Organic Molecules, Quartz & Ancient Groundwater Evidence | #mars habitability # life on Mars # NASA Mars rover discoveries 2026 # Curiosity rover organic molecules # Perseverance quartz discovery # ancient groundwater on Mars # Mars hydrothermal systems # biosignatures on Mars # SETI Institute Mars research # evidence of life on Mars