We believe Mercury suffered a major collision early in the history of the solar system.What was the result of this collision?

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This is the most widely accepted theory based on Mercury's high density and large iron core relative to its size. The collision would have stripped away most of the planet's outer layers, leaving behind a relatively thin mantle and a large core. The remaining material may have been ejected from the inner solar system or could have formed small bodies such as asteroids.

We Believe Mercury Suffered a Major Collision Early in the History