Comments on: Sedna http://www.gavinsblog.com/2004/03/14/sedna/ Estd. in Ireland, July 2002 Tue, 17 Jan 2012 17:42:59 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Frank McGahon http://www.gavinsblog.com/2004/03/14/sedna/comment-page-1/#comment-2038 Frank McGahon Wed, 30 Nov -0001 00:00:00 +0000 http://www.gavinsblog.com/?p=955#comment-2038 But how does one define a planet? It's a big round thing orbiting the sun! :-) But how does one define a planet?

It’s a big round thing orbiting the sun! :-)

]]> By: Nick Radonic http://www.gavinsblog.com/2004/03/14/sedna/comment-page-1/#comment-2039 Nick Radonic Wed, 30 Nov -0001 00:00:00 +0000 http://www.gavinsblog.com/?p=955#comment-2039 For practical purposes I use self-gravity to deliniate a planet from a rock or asteroid. Over a certain mass the gravity of the object will deform the material -- rounding it out. Asteroids on the other hand can be very irregular (peanut shaped even) because the rock is stonger than the weak accretion force of the small mass. For practical purposes I use self-gravity to deliniate a planet from a rock or asteroid. Over a certain mass the gravity of the object will deform the material — rounding it out. Asteroids on the other hand can be very irregular (peanut shaped even) because the rock is stonger than the weak accretion force of the small mass.

]]> By: trish http://www.gavinsblog.com/2004/03/14/sedna/comment-page-1/#comment-2040 trish Wed, 30 Nov -0001 00:00:00 +0000 http://www.gavinsblog.com/?p=955#comment-2040 I think the term "planetessimals" is very cool! I think the term “planetessimals” is very cool!

]]> By: Christopher Bailey http://www.gavinsblog.com/2004/03/14/sedna/comment-page-1/#comment-2041 Christopher Bailey Wed, 30 Nov -0001 00:00:00 +0000 http://www.gavinsblog.com/?p=955#comment-2041 Knowledge is simply a syetem of classification, maximised for the convenience of the user. The current debate over the planetry status of Sedna must be interpreted in this light. I propose that we arbitarily assign Pluto to be the minimum size for status as a planet. Why? If we must draw a line somewhere, shouldn't it be at the place where it is most convenient to do so? Senda should not qualify as a planet. Knowledge is simply a syetem of classification, maximised for the convenience of the user. The current debate over the planetry status of Sedna must be interpreted in this light. I propose that we arbitarily assign Pluto to be the minimum size for status as a planet. Why? If we must draw a line somewhere, shouldn’t it be at the place where it is most convenient to do so? Senda should not qualify as a planet.

]]> By: Gavin http://www.gavinsblog.com/2004/03/14/sedna/comment-page-1/#comment-2042 Gavin Wed, 30 Nov -0001 00:00:00 +0000 http://www.gavinsblog.com/?p=955#comment-2042 Hehe, very funny Frank. And that is a nice word Trish. Althought I am tempted to go along with Christopher - thought now I hear the new body has a buddy, a moon. Hehe, very funny Frank. And that is a nice word Trish. Althought I am tempted to go along with Christopher – thought now I hear the new body has a buddy, a moon.

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