Comments on: Origins of a Species-Killer? http://asymptotia.com/2007/09/09/origins-of-a-species-killer/ Sun, 12 Oct 2008 08:45:44 +0000 http://wordpress.org/?v=2.5.1 By: Clifford http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78737 Clifford Fri, 14 Sep 2007 02:57:06 +0000 http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78737 What about it? Can you point to the research? Maybe also some discussion of it? Cheers, -cvj What about it? Can you point to the research? Maybe also some discussion of it?

Cheers,

-cvj

]]> By: Lab Lemming http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78734 Lab Lemming Fri, 14 Sep 2007 02:40:49 +0000 http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78734 So what about the Princeton research that puts the impact 300,000 years before the extinction? So what about the Princeton research that puts the impact 300,000 years before the extinction?

]]> By: Amara http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78113 Amara Tue, 11 Sep 2007 04:47:48 +0000 http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78113 The <a href="http://en.wikipedia.org/wiki/Yarkovsky_effect" rel="nofollow">Yarkovsky effect</a>. For more, see Bottke's papers web site above and look for his 2006 Ann. Rev. Earth Planet. Sci. 34 review article. The Yarkovsky effect. For more, see Bottke’s papers web site above and look for his 2006 Ann. Rev. Earth Planet. Sci. 34 review article.

]]> By: Clifford http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78056 Clifford Mon, 10 Sep 2007 20:06:58 +0000 http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78056 I think this is mentioned in the article. There was a mechanism mentioned, if I recall correctly. -cvj I think this is mentioned in the article. There was a mechanism mentioned, if I recall correctly.

-cvj

]]> By: toby http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78049 toby Mon, 10 Sep 2007 19:36:17 +0000 http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78049 when objects collide within the asteroid belt, how do they make their way to earth in 75-125 million years? wouldn't they need some impulse pointing roughly towards the earth's orbit? i suspect a comet might still be involved (if indirectly). when objects collide within the asteroid belt, how do they make their way to earth in 75-125 million years?
wouldn’t they need some impulse pointing roughly towards the earth’s orbit? i suspect a comet might still be involved (if indirectly).

]]> By: Amara http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78026 Amara Mon, 10 Sep 2007 13:36:00 +0000 http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-78026 That's funny.. The last time I was at SwRI-Boulder in April, I had several conversations with Bill Bottke, but he didn't say anything about this fantastic work! I was so sleep-deprived at the time, however, it's possible that he did, and I didn't register it... I see from Bill Bottke's <a href="http://www.boulder.swri.edu/~bottke/Reprints/Reprints.html" rel="nofollow">papers web site</a>, that this story was embargoed, but it is not any more, so I found the links to the papers (now, if I could only find time to read it...). Here they are, in the <a href="http://www.nature.com/nature/journal/v449/n7158/index.html" rel="nofollow">current Nature issue</a>: (unfortunately, these are available to Nature subscribers only.. perhaps Bill will make them available at his web site soon) <a href="http://www.nature.com/nature/journal/v449/n7158/full/449001b.html" rel="nofollow">Editorial</a>, <a href="http://www.nature.com/nature/journal/v449/n7158/full/449030a.html" rel="nofollow">News and Views</a> and <a href="http://www.nature.com/nature/journal/v449/n7158/abs/nature06070.html" rel="nofollow">Bottke and Vokrouhlicky and Nesvorny paper</a> Enjoy... That’s funny.. The last time I was at SwRI-Boulder in April, I had several conversations with Bill Bottke, but he didn’t say anything about this fantastic work! I was so sleep-deprived at the time, however, it’s possible that he did, and I didn’t register it…

I see from Bill Bottke’s papers web site, that this story was embargoed, but it is not any more, so I found the links to the papers (now, if I could only find time to read it…). Here they are, in the current Nature issue:
(unfortunately, these are available to Nature subscribers only.. perhaps Bill will make them available at his web site soon)

Editorial,
News and Views
and Bottke and Vokrouhlicky and Nesvorny paper

Enjoy…

]]> By: Dimitri Terryn http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-77959 Dimitri Terryn Mon, 10 Sep 2007 07:28:52 +0000 http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-77959 "The trace of the great event, called the Cretaceous/Tertiary Mass Extinction, can be seen today in the shape of a 180-km (112-mile) -diameter impact crater at modern-day Chicxulub, in Mexico’s Yucatan peninsula." Is this (almost) certain now? I remember reading about it as a kid, then it being debunked, restated, debunked... So I don't follow anymore :-) “The trace of the great event, called the Cretaceous/Tertiary Mass Extinction, can be seen today in the shape of a 180-km (112-mile) -diameter impact crater at modern-day Chicxulub, in Mexico’s Yucatan peninsula.”

Is this (almost) certain now? I remember reading about it as a kid, then it being debunked, restated, debunked… So I don’t follow anymore :-)

]]> By: Yvette http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-77932 Yvette Mon, 10 Sep 2007 03:30:37 +0000 http://asymptotia.com/2007/09/09/origins-of-a-species-killer/#comment-77932 Wow. Just thinking of those orbital mechanics calculations make my head hurt. Wow. Just thinking of those orbital mechanics calculations make my head hurt.

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