Comments on: Inward Bound http://oklo.org/2006/07/01/105/ characterizing planetary systems Fri, 18 Nov 2011 22:27:52 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: systemic - TV on the Radio http://oklo.org/2006/07/01/105/comment-page-1/#comment-374 systemic - TV on the Radio Fri, 13 Oct 2006 06:37:19 +0000 http://oklo.org/?p=105#comment-374 [...] While we’re on the topic, I recently participated in a panel discussion on SETI that closed up the AIAA Space 2006 meeting in San Jose. I argued that the resolution of the Fermi Paradox lies in the fact that we’re inward bound. My understanding is that the video of the discussion will go up on the web at some point, but for the moment, here’s a .pdf (4MB) file with the transparencies that I showed in my 10 minute summary. [...] [...] While we’re on the topic, I recently participated in a panel discussion on SETI that closed up the AIAA Space 2006 meeting in San Jose. I argued that the resolution of the Fermi Paradox lies in the fact that we’re inward bound. My understanding is that the video of the discussion will go up on the web at some point, but for the moment, here’s a .pdf (4MB) file with the transparencies that I showed in my 10 minute summary. [...]

]]> By: systemic - The Big Planet Debate http://oklo.org/2006/07/01/105/comment-page-1/#comment-267 systemic - The Big Planet Debate Fri, 18 Aug 2006 07:41:05 +0000 http://oklo.org/?p=105#comment-267 [...] Looks like Geoff Marcy won the is-Pluto-a-planet debate. His stylish quote (reminiscent of Pablo Picasso’s comments to the New York Times on the occasion of Apollo 11) dramatically wrapped up Dennis Overbye’s NYT article, and made the whole brouhaha look rather foolish indeed. [...] [...] Looks like Geoff Marcy won the is-Pluto-a-planet debate. His stylish quote (reminiscent of Pablo Picasso’s comments to the New York Times on the occasion of Apollo 11) dramatically wrapped up Dennis Overbye’s NYT article, and made the whole brouhaha look rather foolish indeed. [...]

]]> By: greg http://oklo.org/2006/07/01/105/comment-page-1/#comment-200 greg Wed, 05 Jul 2006 18:04:08 +0000 http://oklo.org/?p=105#comment-200 qraal, Interesting point. So if they're in _our_ Kuiper belt, I guess that means they would have most likely come from Venus, from back when Venus actually had an ocean (at the _very minimum_ more than 500 million years ago). greg qraal,

Interesting point. So if they’re in _our_ Kuiper belt, I guess that means they would have most likely come from Venus, from back when Venus actually had an ocean (at the _very minimum_ more than 500 million years ago).

greg

]]> By: Centauri Dreams » Blog Archive » Proxima Centauri and Habitability http://oklo.org/2006/07/01/105/comment-page-1/#comment-193 Centauri Dreams » Blog Archive » Proxima Centauri and Habitability Wed, 05 Jul 2006 13:40:50 +0000 http://oklo.org/?p=105#comment-193 [...] The paper is Laughlin and Wertheimer, “Are Proxima and Alpha Centauri Gravitationally Bound,” as yet unpublished but submitted to The Astronomical Journal. Be sure to read Laughlin’s report on this work on the systemic site (and while you’re there, be sure to check his sly resolution of the Fermi Paradox). He and Wertheimer calculate that Proxima should orbit the Alpha Centauri stars about once every million years, with the semi-major axis of the orbit being roughly 1/6th of a light year. If Proxima is indeed stirring the Centauri planetesimal soup, disloding comets and delivering interesting materials to the inner systems, then the odds on habitability go up. And on that score, it’s humbling and energizing to consider that Proxima, and probably the entire Centauri system, was 2 billion years old when the Sun formed. [...] [...] The paper is Laughlin and Wertheimer, “Are Proxima and Alpha Centauri Gravitationally Bound,” as yet unpublished but submitted to The Astronomical Journal. Be sure to read Laughlin’s report on this work on the systemic site (and while you’re there, be sure to check his sly resolution of the Fermi Paradox). He and Wertheimer calculate that Proxima should orbit the Alpha Centauri stars about once every million years, with the semi-major axis of the orbit being roughly 1/6th of a light year. If Proxima is indeed stirring the Centauri planetesimal soup, disloding comets and delivering interesting materials to the inner systems, then the odds on habitability go up. And on that score, it’s humbling and energizing to consider that Proxima, and probably the entire Centauri system, was 2 billion years old when the Sun formed. [...]

]]> By: qraal http://oklo.org/2006/07/01/105/comment-page-1/#comment-186 qraal Sun, 02 Jul 2006 22:14:46 +0000 http://oklo.org/?p=105#comment-186 Greg Matloff makes the same point in his essay on ETIs in the Solar System, with the twist that even if they've vanished up their collective cyber backsides they'd still need to escape their Sun going off the Main Sequence in the long-run. Maybe they're in our Kuiper Belt? Greg Matloff makes the same point in his essay on ETIs in the Solar System, with the twist that even if they’ve vanished up their collective cyber backsides they’d still need to escape their Sun going off the Main Sequence in the long-run. Maybe they’re in our Kuiper Belt?

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