The beginnings of life on our planet aren't well known because we simply don't know the exact conditions that were present billions of years ago. However, experiments under lab conditions that try to simulate the early solar system could shed some light on how early life developed, and there are some researchers looking into prebiotic chemical reactions to see if we can narrow down the possibilities and rule out any pathways that are unlikely to have contributed to our present thriving ecosystem. These experiments could lead to a better understanding of what life is and how we might detect other kinds of life elsewhere in our solar system or galaxy.
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