By simulating a billion years of Earth’s history, researchers have identified a possible window for life’s earliest chemistry around 4.33 billion years ago. During its first few hundred million years, Earth was a hostile target. Asteroids, comets, and leftover planetesimals, smaller bodies remaining from planet formation, relentlessly battered the planet, generating intense heat that could
🙂 Positive
😐 Neutral
☹️ Negative