Vesta Once Had Active Dynamo
About 4.6 billion years ago, the solar system was little more than a tenuous disk of gas and dust. In the span of merely 10 million years, this soup evolved to form today’s massive, complex planets. In the intervening period, however, the solar system contained a mixture of intermediary bodies — small chunks of rock, the remnants of which today are known as asteroids.
Although not much is known about the early composition of asteroids, some scientists suspect that such information may reveal an unexpected diversity of planetary bodies within the early solar system.
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