S2.1.1 (B) 우주는 어떻게 태어났어요

Key Takeaways

• Earth originated approximately 4.6 billion years ago as an uninhabitable, molten sphere composed of intense heat, dust, and gas, completely devoid of any form of life.
• Over a significant period, the cooling of the Earth's surface allowed for the accumulation of water and the formation of an atmosphere, creating conditions suitable for life.
• The first microscopic life forms emerged in the deep ocean approximately 10 billion years after the Earth's formation, marking the beginning of biological existence on the planet.
• Life underwent a continuous process of evolution over millions of years, transitioning from simple aquatic organisms to complex plants, dinosaurs, and eventually diverse animal species.
• Mass extinction events, such as the impact of a meteorite that caused the disappearance of dinosaurs, played a critical role in shaping the trajectory of life on Earth.
• Humanity represents a recent stage in the long evolutionary history of life, having developed through gradual changes over vast periods of time to become current inhabitants.
• The ongoing development of the universe and the future of life on Earth remain dynamic processes, with the potential for new discoveries and biological changes yet to unfold.