A brief visit from a red and extremely elongated interstellar asteroid

  title={A brief visit from a red and extremely elongated interstellar asteroid},
  author={K. Meech and R. Weryk and M. Micheli and J. Kleyna and O. Hainaut and R. Jedicke and R. Wainscoat and K. Chambers and J. Keane and A. Petric and L. Denneau and E. Magnier and T. Berger and M. Huber and H. Flewelling and C. Waters and E. Schunova-Lilly and S. Chastel},
  • K. Meech, R. Weryk, +15 authors S. Chastel
  • Published 2017
  • Physics, Medicine
  • Nature
  • None of the approximately 750,000 known asteroids and comets in the Solar System is thought to have originated outside it, despite models of the formation of planetary systems suggesting that orbital migration of giant planets ejects a large fraction of the original planetesimals into interstellar space. The high predicted number density of icy interstellar objects (2.4 × 10−4 per cubic astronomical unit) suggests that some should have been detected, yet hitherto none has been seen. Many… CONTINUE READING

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