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Oort clood

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The Oort clood /ˈɔːrt/[1] (cried efter the Dutch astronomer Jan Oort), or Öpik–Oort clood,[2] is a hypothesised spherical clood o maistly icy planetesimals that is thocht tae lig 50,000 AU, or aamaist a licht-year, frae the Sun.[3] This wad pit the clood aamaist a quarter o the wey tae Proxima Centauri, the nearest starn tae the Sun.

References

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  1. "Oort". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public leebrar membership required.)
  2. Whipple, F. L. (30 September 1987). "A Review of Cometary Sciences". Philosophical Transactions of the Royal Society A. Royal Society Publishing. 323 (1572): 339–347 [341]. Bibcode:1987RSPTA.323..339W. doi:10.1098/rsta.1987.0090. Archived frae the original on 1 December 2017. Retrieved 9 Apryle 2014. Unknown parameter |coauthors= ignored (|author= suggested) (help)
  3. Alessandro Morbidelli (2006). "Origin and dynamical evolution of comets and their reservoirs of water ammonia and methane.". arXiv:astro-ph/0512256 [astro-ph].