How asteroids may have sparked life on Earth

How asteroids may have sparked life on Earth

Ancient asteroid impacts may have done more than reshape Earth's surface—they could have helped spark life itself. New computer models show the collisions created enormous underground hydrothermal systems by cracking the planet's crust and allowing hot water to flow through it. These long-lasting, life-friendly environments may have covered much of the early Earth, turning cosmic destruction into an unexpected opportunity.