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Planetary science

Saturn's bared mini-moons

Propeller-shaped structures seem to reveal the presence of moonlets, about 100 metres in diameter, embedded in Saturn's rings. This discovery adds to our picture of how the rings formed and are evolving.

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Figure 1: Moonlet and propeller.
Figure 2: Saturn's rings.


  1. Dones, L. Icarus 92, 194–203 (1991).

    Article  ADS  Google Scholar 

  2. Colwell, J. E. Planet. Space Sci. 42, 1139–1149 (1994).

    Article  ADS  Google Scholar 

  3. French, R. G. & Nicholson, P. D. Icarus 145, 502–523 (2000).

    Article  ADS  Google Scholar 

  4. Tiscareno, M. S. et al. Nature 440, 648–650 (2006).

    Article  ADS  CAS  Google Scholar 

  5. Showalter, M. R. Nature 351, 709–713 (1991).

    Article  ADS  Google Scholar 

  6. Porco, C. C. et al. Science 307, 1226–1236 (2005).

    Article  ADS  CAS  Google Scholar 

  7. Lissauer, J. J. et al. Nature 292, 707–711 (1981).

    Article  ADS  Google Scholar 

  8. Cuzzi, J. N. et al. in Planetary Rings (eds Brahic, A. & Greenberg, R.) 73–199 (Univ. Arizona Press, Tucson, 1984).

    Google Scholar 

  9. Esposito, L. W. et al. Science 307, 1251–1255 (2005).

    Article  ADS  CAS  Google Scholar 

  10. Salo, H. & Karjalainen, R. Icarus 164, 428–460 (2003).

    Article  ADS  Google Scholar 

  11. Sremcˇević, M. et al. Mon. Not. R. Astron. Soc. 337, 1139–1152 (2002).

    Article  ADS  Google Scholar 

Download references

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Spahn, F., Schmidt, J. Saturn's bared mini-moons. Nature 440, 614–615 (2006).

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