Comments on: Supernova Generates Enough Dust for 10,000 Earths http://www.universetoday.com/2007/12/20/supernova-generates-enough-dust-for-10000-earths/ Space and astronomy news Sat, 21 Nov 2009 21:17:24 -0600 http://wordpress.org/?v=2.8.6 hourly 1 By: Bill http://www.universetoday.com/2007/12/20/supernova-generates-enough-dust-for-10000-earths/comment-page-1/#comment-4891 Bill Fri, 21 Dec 2007 01:47:54 +0000 http://www.universetoday.com/2007/12/20/supernova-generates-enough-dust-for-10000-earths/#comment-4891 First, the dust clumps together through gravitational attraction, slowly growing until it acquires enough mass to generate heat at the core through gravational compression, friction, impacts, etc. As the material heats up and melts, the different elements and compounds separate as each has a different melting point, with the heavier metals sinking to the core, the iron, uranium, etc. First, the dust clumps together through gravitational attraction, slowly growing until it acquires enough mass to generate heat at the core through gravational compression, friction, impacts, etc. As the material heats up and melts, the different elements and compounds separate as each has a different melting point, with the heavier metals sinking to the core, the iron, uranium, etc.

]]> By: John Mendenhall http://www.universetoday.com/2007/12/20/supernova-generates-enough-dust-for-10000-earths/comment-page-1/#comment-4867 John Mendenhall Thu, 20 Dec 2007 22:17:28 +0000 http://www.universetoday.com/2007/12/20/supernova-generates-enough-dust-for-10000-earths/#comment-4867 "Wouldn't the gold formed also be in the form of dust?" But not as gold dust, but as scattered atoms of gold mixed in with everything else. The separation process probably requires a planet, maybe a rocky planet, and probably water, and geologic time, and on and on. "Wouldn't the gold formed also be in the form of dust?"

But not as gold dust, but as scattered atoms of gold mixed in with everything else. The separation process probably requires a planet, maybe a rocky planet, and probably water, and geologic time, and on and on.

]]> By: Neil http://www.universetoday.com/2007/12/20/supernova-generates-enough-dust-for-10000-earths/comment-page-1/#comment-4859 Neil Thu, 20 Dec 2007 21:07:59 +0000 http://www.universetoday.com/2007/12/20/supernova-generates-enough-dust-for-10000-earths/#comment-4859 Of course, so would the uranium, iron and all other elements made by the explosion. However, the author is primarily talking about the various oxides and silicates mentioned. Of course, so would the uranium, iron and all other elements made by the explosion. However, the author is primarily talking about the various oxides and silicates mentioned.

]]> By: David http://www.universetoday.com/2007/12/20/supernova-generates-enough-dust-for-10000-earths/comment-page-1/#comment-4853 David Thu, 20 Dec 2007 19:52:34 +0000 http://www.universetoday.com/2007/12/20/supernova-generates-enough-dust-for-10000-earths/#comment-4853 Wouldn't the gold formed also be in the form of dust? Wouldn't the gold formed also be in the form of dust?

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