http://www.netwhatever.com/astrodownunder/2005/09/26/nine-ten-eleven-how-many-planets/ Down Under, Looking Up Sun, 23 Aug 2009 20:17:15 +0000 hourly 1 http://wordpress.org/?v=3.2.1 http://www.netwhatever.com/astrodownunder/2005/09/26/nine-ten-eleven-how-many-planets/comment-page-1/#comment-7 Astronomy Down Under - Down Under, Looking Up » Pluto still a planet, probably Thu, 17 Aug 2006 02:21:33 +0000 http://www.netwhatever.com/astrodownunder/2005/09/26/nine-ten-eleven-how-many-planets/#comment-7 [...] I mentioned a while ago that the IAU was going to decide on an unambiguous definition for the word “planet”, and that it was likely that this would change the number of planets in our solar system. The decision has not yet been reached; this should happen later this month. However, several members of the aforementioned panel suggest that Pluto will join a new group called “dwarf planets” (we already have “terrestrial planets” and “giant gas planets”), which might include any body that orbits the Sun and that is large enough that its own gravity makes it spherical (or nearly so); this would include anything larger than some 700km across. [...] [...] I mentioned a while ago that the IAU was going to decide on an unambiguous definition for the word “planet”, and that it was likely that this would change the number of planets in our solar system. The decision has not yet been reached; this should happen later this month. However, several members of the aforementioned panel suggest that Pluto will join a new group called “dwarf planets” (we already have “terrestrial planets” and “giant gas planets”), which might include any body that orbits the Sun and that is large enough that its own gravity makes it spherical (or nearly so); this would include anything larger than some 700km across. [...]

]]> http://www.netwhatever.com/astrodownunder/2005/09/26/nine-ten-eleven-how-many-planets/comment-page-1/#comment-3 Astronomy Down Under - Down Under, Looking Up » Looking at Pluto Thu, 17 Aug 2006 00:49:40 +0000 http://www.netwhatever.com/astrodownunder/2005/09/26/nine-ten-eleven-how-many-planets/#comment-3 [...] Nine, ten, eleven… how many planets? [...] [...] Nine, ten, eleven… how many planets? [...]

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