Definisi planet

Definisi planet, semenjak kata tersebut diciptakan oleh orang Yunani kuno, telah mencakup berbagai benda langit. Astronom Yunani menggunakan istilah asteres planetai (ἀστέρες πλανῆται), "bintang pengembara", untuk objek serupa bintang yang tampak bergerak di atas langit.

Referensi

Daftar pustaka dan pranala luar 

 What is a planet? -Steven Soter
 Why Planets will never be defined: Robert Roy Britt on the outcome of the IAU's decision
  An examination of the redefinition of Pluto from a linguistic perspective.
 The Pluto Files by Neil deGrasse Tyson  The Rise and Fall of America's Favorite Planet   
 Q&A New planets proposal Wednesday, 16 August 2006, 13:36 GMT 14:36 UK
 David Jewitt's Kuiper Belt page- Pluto
 Dan Green's webpage: What is a planet?
 What is a Planet? Debate Forces New Definition
 The Flap Over Pluto
 "You Call That a Planet?: How astronomers decide whether a celestial body measures up."
 David Darling. The Universal Book of Astronomy, from the Andromeda Galaxy to the Zone of Avoidance. 2003. John Wiley & Sons Canada (), p. 394
 Collins Dictionary of Astronomy, 2nd ed. 2000. HarperCollins Publishers (), p. 312-4.
 Catalogue of Planetary Objects. Version 2006.0 O.V. Zakhozhay, V.A. Zakhozhay, Yu.N. Krugly, 2006
 The New Proposal, Resolution 5, 6 and 7 2006-08-22
 IAU 2006 General Assembly: video-records of the discussion and of the final vote on the Planet definition.
 Boyle, Alan, The Case for Pluto The Case for Pluto Book by MSNBC Science Editor and author of "Cosmic Log"
 Croswell, Dr. Ken "Pluto Question" Pluto Question

 
Ilmu keplanetan