<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
		>
<channel>
	<title>Comments on: What if all the Kepler exoplanet candidates orbited one star?</title>
	<atom:link href="http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/feed/" rel="self" type="application/rss+xml" />
	<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/</link>
	<description></description>
	<lastBuildDate>Wed, 21 Nov 2012 15:12:45 +0000</lastBuildDate>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.org/?v=3.4.2</generator>
	<item>
		<title>By: Julian</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/#comment-338978</link>
		<dc:creator>Julian</dc:creator>
		<pubDate>Thu, 16 Aug 2012 01:54:48 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=52876#comment-338978</guid>
		<description>Given the observational bias, (ie, it&#039;s much easier to detect large planets in close orbit than it is to detect small planets in large orbits), what&#039;s even more humbling is that this graphical representation is just the tip of the iceberg within the systems that have been currently surveyed.

It should be pretty straight-forward for astronomers to use existing data to factor for observation bias and model how many planets exist in larger orbits with their mass distribution. Probably already done 100 times over. Not my field so I don&#039;t know...

Anyway, great stuff! Science + data visualization FTW.</description>
		<content:encoded><![CDATA[<p>Given the observational bias, (ie, it&#8217;s much easier to detect large planets in close orbit than it is to detect small planets in large orbits), what&#8217;s even more humbling is that this graphical representation is just the tip of the iceberg within the systems that have been currently surveyed.</p>
<p>It should be pretty straight-forward for astronomers to use existing data to factor for observation bias and model how many planets exist in larger orbits with their mass distribution. Probably already done 100 times over. Not my field so I don&#8217;t know&#8230;</p>
<p>Anyway, great stuff! Science + data visualization FTW.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Andreas H</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/#comment-338977</link>
		<dc:creator>Andreas H</dc:creator>
		<pubDate>Wed, 15 Aug 2012 22:36:00 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=52876#comment-338977</guid>
		<description>Of course it doesn&#039;t mean we are technically restricted.

The real problem will not be propulsion, but communication. Look at the developement of various civilizations in our own history, they were not limited by how far they could travel but by how far they could still hold a steady stream of communication.

Even if we can expand our own lifespawn to virtual immortality and conquer various technologies that would allow us to live forever on space ships, to actually explore space and to colonize it we need the ability to communicate efficiently enough to hold a &quot;normal&quot; attention-span. Ideally this means real time communications, we might work with a delay of a couple days at most, but anything longer will make it impossible to stay connected...</description>
		<content:encoded><![CDATA[<p>Of course it doesn&#8217;t mean we are technically restricted.</p>
<p>The real problem will not be propulsion, but communication. Look at the developement of various civilizations in our own history, they were not limited by how far they could travel but by how far they could still hold a steady stream of communication.</p>
<p>Even if we can expand our own lifespawn to virtual immortality and conquer various technologies that would allow us to live forever on space ships, to actually explore space and to colonize it we need the ability to communicate efficiently enough to hold a &#8220;normal&#8221; attention-span. Ideally this means real time communications, we might work with a delay of a couple days at most, but anything longer will make it impossible to stay connected&#8230;</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: beer case</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/#comment-338976</link>
		<dc:creator>beer case</dc:creator>
		<pubDate>Wed, 15 Aug 2012 18:37:06 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=52876#comment-338976</guid>
		<description>@Andreas H:

No FTL does not mean we are trapped in our own solarsystem. It just mean it&#039;s gonna take a bit more time to get out there.

That the fermi paradox seems seems real, could simply be a matter of not listening to the right frequencies:

http://news.discovery.com/space/do-we-overlook-alien-beacons.html</description>
		<content:encoded><![CDATA[<p>@Andreas H:</p>
<p>No FTL does not mean we are trapped in our own solarsystem. It just mean it&#8217;s gonna take a bit more time to get out there.</p>
<p>That the fermi paradox seems seems real, could simply be a matter of not listening to the right frequencies:</p>
<p><a href="http://news.discovery.com/space/do-we-overlook-alien-beacons.html" rel="nofollow">http://news.discovery.com/space/do-we-overlook-alien-beacons.html</a></p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Andreas H</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/#comment-338975</link>
		<dc:creator>Andreas H</dc:creator>
		<pubDate>Wed, 15 Aug 2012 17:37:16 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=52876#comment-338975</guid>
		<description>I think the most interesting thing we can learn from this video is how heavily biased the results from Kepler are. Don&#039;t get me wrong, they are great results but the method used by Kepler heaviliy favors big planets in close orbits.

Of course we can&#039;t just extrapolate Keplers findings and assume similar density and amount of planets for wider orbits, but it is a pretty conservative assumption to at least expect a fair amount of additional planets in wider orbits.

If anything, Kepler has shown that Planets are a common thing in this universe, more common than stars! While the last bit is not yet solidified 100% it&#039;s by no means a stretch to say these days.

We are all very understandably excited about Curiosity, but thinking about the fact that there are billions of planets waiting for exploration is an almost overwhelming feeling.

At the same time I wonder, what if FTL technology is indeed impossible? What if in thousands of years we manage to perfectly cartograph our surrounding universe but will forever be captives of our own star system, unable to bridge the distances of space. What if the Fermi Paradox is no paradox at all, but just the confirmation of the physical universe as we understand it now? What if we will never be able to explore space?</description>
		<content:encoded><![CDATA[<p>I think the most interesting thing we can learn from this video is how heavily biased the results from Kepler are. Don&#8217;t get me wrong, they are great results but the method used by Kepler heaviliy favors big planets in close orbits.</p>
<p>Of course we can&#8217;t just extrapolate Keplers findings and assume similar density and amount of planets for wider orbits, but it is a pretty conservative assumption to at least expect a fair amount of additional planets in wider orbits.</p>
<p>If anything, Kepler has shown that Planets are a common thing in this universe, more common than stars! While the last bit is not yet solidified 100% it&#8217;s by no means a stretch to say these days.</p>
<p>We are all very understandably excited about Curiosity, but thinking about the fact that there are billions of planets waiting for exploration is an almost overwhelming feeling.</p>
<p>At the same time I wonder, what if FTL technology is indeed impossible? What if in thousands of years we manage to perfectly cartograph our surrounding universe but will forever be captives of our own star system, unable to bridge the distances of space. What if the Fermi Paradox is no paradox at all, but just the confirmation of the physical universe as we understand it now? What if we will never be able to explore space?</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Messier Tidy Upper</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/#comment-338974</link>
		<dc:creator>Messier Tidy Upper</dc:creator>
		<pubDate>Wed, 15 Aug 2012 16:45:33 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=52876#comment-338974</guid>
		<description>On doing that checking for tonight :

Looks like it was WASP  &lt;i&gt;(Wide Angle Search for Planets - La Silla observatory Chile, ESO)&lt;/i&gt; that found retrograde exoplanets :

http://www.sciencedaily.com/releases/2010/04/100413071749.htm

But then again :

http://en.wikipedia.org/wiki/HAT-P-7b

HAT -P-7b may be retrograde and is also known as  Kepler-2b ... (Or not 2b! A.k.a. the Hamlet Planet?)

..  although that may just have been a confirmation test rather than a discovery.

OTOH, &lt;I&gt;this&lt;/i&gt; via &lt;i&gt;Universe today&lt;/i&gt; :

http://www.universetoday.com/85585/the-flip-side-of-exoplanet-orbits/

Implies that &lt;i&gt;Kepler&lt;/i&gt; itself  &lt;i&gt;*has*&lt;/i&gt; found retrograde Hot Joves but does NOT explictly state so.

Which means .. ? [Shrug.] Still no conclusive answer here from me I&#039;m afraid. :-(</description>
		<content:encoded><![CDATA[<p>On doing that checking for tonight :</p>
<p>Looks like it was WASP  <i>(Wide Angle Search for Planets &#8211; La Silla observatory Chile, ESO)</i> that found retrograde exoplanets :</p>
<p><a href="http://www.sciencedaily.com/releases/2010/04/100413071749.htm" rel="nofollow">http://www.sciencedaily.com/releases/2010/04/100413071749.htm</a></p>
<p>But then again :</p>
<p><a href="http://en.wikipedia.org/wiki/HAT-P-7b" rel="nofollow">http://en.wikipedia.org/wiki/HAT-P-7b</a></p>
<p>HAT -P-7b may be retrograde and is also known as  Kepler-2b &#8230; (Or not 2b! A.k.a. the Hamlet Planet?)</p>
<p>..  although that may just have been a confirmation test rather than a discovery.</p>
<p>OTOH, <i>this</i> via <i>Universe today</i> :</p>
<p><a href="http://www.universetoday.com/85585/the-flip-side-of-exoplanet-orbits/" rel="nofollow">http://www.universetoday.com/85585/the-flip-side-of-exoplanet-orbits/</a></p>
<p>Implies that <i>Kepler</i> itself  <i>*has*</i> found retrograde Hot Joves but does NOT explictly state so.</p>
<p>Which means .. ? [Shrug.] Still no conclusive answer here from me I&#8217;m afraid. <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_sad.gif' alt=':-(' class='wp-smiley' /> </p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Ken Howard</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/#comment-338973</link>
		<dc:creator>Ken Howard</dc:creator>
		<pubDate>Wed, 15 Aug 2012 15:48:42 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=52876#comment-338973</guid>
		<description>@HvP

Thank you!  That makes a load of sense now!  I appreciate it ;-)</description>
		<content:encoded><![CDATA[<p>@HvP</p>
<p>Thank you!  That makes a load of sense now!  I appreciate it <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_wink.gif' alt=';-)' class='wp-smiley' /> </p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Messier Tidy Upper</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/#comment-338972</link>
		<dc:creator>Messier Tidy Upper</dc:creator>
		<pubDate>Wed, 15 Aug 2012 13:47:34 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=52876#comment-338972</guid>
		<description>Superluminous animation &amp; write up. Cheers!  :-D

@25.   David Gormley asked : &lt;i&gt;&quot;Shouldn’t some of these planets be moving in the opposite direction?&quot;&lt;/i&gt;

Pretty certain I recall reading of several backwards (retrograde) orbiting exoplanets being discovered but I&#039;m not sure whether or not it was the &lt;i&gt;Kepler&lt;/i&gt; space telescope  that found them. So, quite likely, yeah. Will have to check.

</description>
		<content:encoded><![CDATA[<p>Superluminous animation &amp; write up. Cheers!  <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_biggrin.gif' alt=':-D' class='wp-smiley' /> </p>
<p>@25.   David Gormley asked : <i>&#8220;Shouldn’t some of these planets be moving in the opposite direction?&#8221;</i></p>
<p>Pretty certain I recall reading of several backwards (retrograde) orbiting exoplanets being discovered but I&#8217;m not sure whether or not it was the <i>Kepler</i> space telescope  that found them. So, quite likely, yeah. Will have to check.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Satan Claws</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/#comment-338971</link>
		<dc:creator>Satan Claws</dc:creator>
		<pubDate>Wed, 15 Aug 2012 12:00:16 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=52876#comment-338971</guid>
		<description>Anyway, what surprised me the most was how many planets were discovered (relatively) close to their host star. Granted, confirming the presence of planetary companions relatively far from the star is harder, but this animation puts it in quite a different perspective!</description>
		<content:encoded><![CDATA[<p>Anyway, what surprised me the most was how many planets were discovered (relatively) close to their host star. Granted, confirming the presence of planetary companions relatively far from the star is harder, but this animation puts it in quite a different perspective!</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Satan Claws</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/#comment-338970</link>
		<dc:creator>Satan Claws</dc:creator>
		<pubDate>Wed, 15 Aug 2012 11:58:31 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=52876#comment-338970</guid>
		<description>@Tris (#11):
The star&#039;s mass and the distance to the star. Look up: Kepler&#039;s third law.</description>
		<content:encoded><![CDATA[<p>@Tris (#11):<br />
The star&#8217;s mass and the distance to the star. Look up: Kepler&#8217;s third law.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Jess Tauber</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2012/08/14/what-if-all-the-kepler-exoplanet-candidates-orbited-one-star/#comment-338969</link>
		<dc:creator>Jess Tauber</dc:creator>
		<pubDate>Tue, 14 Aug 2012 23:52:50 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/?p=52876#comment-338969</guid>
		<description>I&#039;m surprised none of you suggested that by combining the data from all the exoplanets we could create a kind of computer program that would send us a message from the original galactic planetary system about it&#039;s properties (like that STNG episode with the DNA from the various humanoid races that so disgusted the Romulans that they were related to Klingons...)</description>
		<content:encoded><![CDATA[<p>I&#8217;m surprised none of you suggested that by combining the data from all the exoplanets we could create a kind of computer program that would send us a message from the original galactic planetary system about it&#8217;s properties (like that STNG episode with the DNA from the various humanoid races that so disgusted the Romulans that they were related to Klingons&#8230;)</p>
]]></content:encoded>
	</item>
</channel>
</rss>

<!-- Performance optimized by W3 Total Cache. Learn more: http://www.w3-edge.com/wordpress-plugins/

Page Caching using disk: basic

Served from: blogs.discovermagazine.com @ 2013-05-26 03:12:37 -->