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Dog-Bone Shaped Asteroid 216 Kleopatra

Asteroid 216 Kleopatra, about the size of New Jersey, orbits the Sun between Mars and Jupiter. It has an unusual dog-bone shape. Recently mapped with Earth-based radar, it reflects radio waves so well that astronomers speculate it is composed mostly of metals like nickel and iron. Its unusual shape and composition may come from the central regions of a tremendous collision between larger asteroids billions of years ago.