NASA - National Aeronautics and Space Administration

Origins Education Forum

How did life begin on Earth?

The earliest of humanity's history records speculations about how life began. It is a very practical question, relating to such issues as the relationship between the ecosystem and the environment of the Earth, but it is also deeply tied to humanity's quest to understand itself and where it came from. Our understanding of how easy or difficult it is for life to form directly affects our thinking about whether or not we are alone in the cosmos.

NASA's astrobiology program broadly addresses the origin and evolution of life in the universe. Part of this research is aimed at understanding how life began on Earth. This includes: