SKIP
The source material provided consists only of a headline and a brief description tag from New Scientist. There are no concrete facts, figures, specific asteroid names, rotation speeds, measurements, researcher names, institutions, or findings stated. The content lacks the verifiable data required to write an accurate science news brief. Without specific information about which asteroids were found, their actual rotation rates, the mechanism causing rapid rotation, or details about how this challenges current understanding of asteroid structure, a responsible brief cannot be constructed without inventing facts.