Approximately how long ago did the impact involving Theia occur?
Answer
4.5 billion years ago
The massive collision between Earth and Theia is estimated to have taken place roughly 4.5 billion years ago, which was shortly after the Earth itself formed. This timeline places the event during the chaotic early formation of the solar system, where protoplanetary bodies frequently interacted, collided, and merged. Understanding this timeframe helps scientists reconstruct the environmental conditions and the developmental history of the Earth-Moon system.
Related Questions
What is the primary scientific name for the theory explaining the origin of the Moon?Approximately how large was the protoplanet Theia that collided with Earth?Which elements serve as isotopic evidence for the shared heritage of the Earth and the Moon?Why is the Co-accretion theory generally considered insufficient to explain the Moon?Approximately how long ago did the impact involving Theia occur?What do recent computer simulations suggest about the speed of the Moons formation?Why does the Moon lack water and other volatile compounds compared to the Earth?What became of the remnants of the protoplanet Theia after the collision?What does the angular momentum of the Earth-Moon system reveal about the impact?Why are fragments of Theia not easily found on the surface of the Earth today?