Here’s a big question: How did life begin on Earth? We don’t quite know, but this fundamental question is a driving force behind astrobiology research at NASA. Understanding how life originated on our planet could inform us about the potential for life to exist throughout the universe. Astrobiology expert Shawn Domagal-Goldman explains more about our search for answers. Explore more about astrobiology at NASA: https://astrobiology.nasa.gov | NASA - National Aeronautics and Space Administration