According to NASA, the agency's Lucy spacecraft has revealed new details about asteroid Donaldjohanson during a recent close approach. The asteroid displays an unusual peanut shape and an unstable wobble—the legacy of violent collisions 155 million years ago. Scientists believe fragments from an ancient cosmic crash merged together to form this body, which continues to bear the marks of that turbulent history. The discovery offers researchers a rare window into how asteroids evolve and change over deep time.

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