Ultra-deep biosphere

The ultra-deep biosphere refers to the hidden ecosystems found deep beneath the Earth's surface, often several kilometers below the ground or ocean floor. These unique environments host microorganisms that thrive under extreme conditions, such as high pressure, high temperatures, and limited nutrients. Research suggests that these life forms can survive for millions of years, relying on chemical processes rather than sunlight for energy. Studying the ultra-deep biosphere helps scientists understand the limits of life on Earth and may provide insights into the possibilities of life on other celestial bodies.