Hard Rock: Asteroid Lutetia May Be an Intact Leftover from Planetary Formation

A brief encounter between a European spacecraft and a large asteroid has revealed that the space rock is likely a mostly intact leftover from the planetary formation process. But the flyby raised more questions than it answered, providing tantalizing but somewhat puzzling hints about the asteroid’s makeup and internal structure

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Hard Rock: Asteroid Lutetia May Be an Intact Leftover from Planetary Formation