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A fact from Tyche (hypothetical planet) appeared on Wikipedia's Main Page in the Did you know column on 21 February 2011 (check views). The text of the entry was as follows:

Did you know... that in 1999, a giant planet was hypothesized to exist in the outer Oort cloud of the solar system, but most astronomers are skeptical of its existence?

A record of the entry may be seen at Wikipedia:Recent additions/2011/February.

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+{{dyktalk|21 February|2011|entry=... that in 1999, a '''[[Tyche (planet)|giant planet]]''' was hypothesized to exist in the outer [[Oort cloud]] of the [[solar system]], but most astronomers are skeptical of its existence?}}
-{{astronomy|object=yes|class=Start|importance=low}}
-{{WPSS|class=Start|importance=low}}
+{{WikiProject banner shell|class=Start|
+{{WikiProject Astronomy|object=yes|importance=low|solar_system=yes|ss-importance=low}}
+}}
-==Appearance of this planet==
+{{archive box|auto=yes}}
-Would this planet excist of [[solid hydrogen]], since the melting temperature of hydrogen is 14 Kelvin? (OP)
-:Possibly you might find solid hydrogen at its core, the astrophysicists in question claim a surface (hard to define) temperature of around 200.15K, now the core would be at greater pressure, so possibly you might get solid hydrogen. But this gas giant is suspected a relatively mild temperature of -73 celsius, compare this to the coldest temperatures on earth which are in the region of -89 celsius. This is all assuming the planet even exists.[[User:Larryisgood|Larryisgood]] ([[User talk:Larryisgood|talk]]) 20:24, 14 February 2011 (UTC)
-::Yes, I realize this is a fully hypothetical situation. But about the temperature: How would the temperature of this planet be so high? The Oort Cloud isn't even reaching 10 Kelvin, if I'm right? How would this hypothetical planet get (or have gotten) it's energy to stay at that relatively high temperature? (OP again)
-:I'm only an undergrad astrophysics student but I can give it a try. We can probably rule out any greenhouse effects like those that give Venus it's high temperature, since it's much too far away from the sun, and we can assume that since the mass is MUCH to low to even achieve brown dwarf status, that it's not producing its own energy through nuclear interactions. If a gas cloud were to collapse to something the size of a 4 jupiter mass object, its gravitational potential energy is converted to heat energy through interparticle collisions, and would be pretty significant. I can't give you the figures, but the energy would be more than enough to account for the kind of temperature that Tyche is postulated to have.[[User:Larryisgood|Larryisgood]] ([[User talk:Larryisgood|talk]]) 22:05, 14 February 2011 (UTC)
-== redirect ==
-Can someone please explain why this should be a redirect and not its own article? <b>[[User:Kingturtle|Kingturtle =]]</b> <small>([[User talk:Kingturtle|talk]])</small> 01:16, 15 February 2011 (UTC)
-:[[Planets beyond Neptune]] is the catch-all page for any and all trans-Neptunian planets. It has had a subsection on Matese and Whitmire's planet since it was created. Right now, there isn't enough new information to justify a new article; their planet, like all the other planets on this page, is still just speculation. If we actually ''found'' it, that would change the game somewhat. But we haven't yet. Indeed there isn't really any reason to assume that the WISE data will reveal evidence of it. Other than some extra media attention and a catchy name, I don't really see any difference between this and their dozen or so other attempts to publicise their idea over the last nine years.<b>[[User:Serendipodous|<font color="#00b">Serendi</font>]][[Special:Contributions/Serendipodous|<sup><font color="#b00">pod</font></sup>]]<font color="#00b">[[User talk: Serendipodous|ous]]</font></b> 09:37, 15 February 2011 (UTC)
-::This also somewhat reminds me of the talk at [[Wikipedia_talk:WikiProject_Astronomy#Are planet candidates notable?]]. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 21:53, 16 February 2011 (UTC)
-==Tenses need work==
-According to [http://www.huffingtonpost.com/2011/02/14/tyche-hidden-planet_n_823028.html this article] the evidence regarding the planet has not yet been presented, and won't be till WISE's data comes out in April, yet the article suggests the evidence has already been presented. [[Special:Contributions/68.146.64.9|68.146.64.9]] ([[User talk:68.146.64.9|talk]]) 07:24, 15 February 2011 (UTC)
-== The original paper ==
-Persistent Evidence of a Jovian Mass Solar Companion in the Oort Cloud ([http://arxiv.org/abs/1004.4584 arXiv:1004.4584] / [http://arxiv.org/PS_cache/arxiv/pdf/1004/1004.4584v1.pdf PDF])  <span style="font-size: smaller;" class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/76.175.197.99|76.175.197.99]] ([[User talk:76.175.197.99|talk]]) 08:57, 15 February 2011 (UTC)</span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->
-==Redirected==
-This article was redirected to [[Planets beyond Neptune]] on 15 Feb 2011 by Serendipodous.
-[[Special:Contributions/64.229.101.183|64.229.101.183]] ([[User talk:64.229.101.183|talk]]) 10:58, 15 February 2011 (UTC)
-==Merge with [[Planets beyond Neptune]]==
-<s>Nine</s> Twelve years these two have been promoting their planet. In that time the evidence for its existence has not increased one iota. But suddenly they get a namecheck in the ''Daily Mail'' and this thing is notable enough for an article of its own? [[Planets beyond Neptune#Subsequent proposed trans-Neptunian planets|Planets beyond Neptune]] features several more hypothetical trans-Neptunian planets. What about Mike Brown's trans-Neptunian planet? What about Patryk Lakawka's planet? Those arguably have more evidence to back them up. <b>[[User:Serendipodous|<font color="#00b">Serendi</font>]][[Special:Contributions/Serendipodous|<sup><font color="#b00">pod</font></sup>]]<font color="#00b">[[User talk: Serendipodous|ous]]</font></b> 21:20, 15 February 2011 (UTC)
-:It was all over CNN this morning as well... [[Special:Contributions/64.229.101.183|64.229.101.183]] ([[User talk:64.229.101.183|talk]]) 21:25, 15 February 2011 (UTC)
-:Not a whole lot of new Gscholar hits [http://scholar.google.com/scholar?as_q=tyche+planet&num=100&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=any&as_sauthors=&as_publication=&as_ylo=2010&as_yhi=2011&as_sdt=1.&as_sdtp=on&as_sdtf=&as_sdts=5&hl=en] ... only some Gnews hits [http://www.google.com/search?num=100&hl=en&safe=off&tbs=nws%3A1&q=tyche+planet&btnG=Search] -- [[Special:Contributions/64.229.101.183|64.229.101.183]] ([[User talk:64.229.101.183|talk]]) 21:28, 15 February 2011 (UTC)
-:According to NY Daily News [http://www.nydailynews.com/news/national/2011/02/15/2011-02-15_could_space_telescope_wise_reveal_planet_x_at_least_two_scientists_hope_so.html?r=news], it's actually been 12 years... [[Special:Contributions/64.229.101.183|64.229.101.183]] ([[User talk:64.229.101.183|talk]]) 21:34, 15 February 2011 (UTC)
-::Yeah I think you're right. The source does say 1999. But my point still stands. <b>[[User:Serendipodous|<font color="#00b">Serendi</font>]][[Special:Contributions/Serendipodous|<sup><font color="#b00">pod</font></sup>]]<font color="#00b">[[User talk: Serendipodous|ous]]</font></b> 21:45, 15 February 2011 (UTC)
-:I am not unsympathetic to your position.  Among other things, we see a much more skeptical [http://www.space.com/10863-mystery-planet-tyche-debate.html article] today at space.com.  Why don't you put up a merge proposal, and let's work the process on this one, as opposed to taking perhaps over-bold unilateral action?  <span style="font-size: smaller;" class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/158.111.5.34|158.111.5.34]] ([[User talk:158.111.5.34|talk]]) 17:34, 16 February 2011 (UTC)</span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->
-Fair enough. Changed post to a merge request.  <b>[[User:Serendipodous|<font color="#00b">Serendi</font>]][[Special:Contributions/Serendipodous|<sup><font color="#b00">pod</font></sup>]]<font color="#00b">[[User talk: Serendipodous|ous]]</font></b> 17:48, 16 February 2011 (UTC)
-:I support this merge. The existence of this article is reflective of WP's popmedia bias. [[User:SchmuckyTheCat|SchmuckyTheCat]] ([[User talk:SchmuckyTheCat|talk]])
-: I think I also support a merge, but only after the media hype has slowed down in a week. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 20:01, 16 February 2011 (UTC)
-::That is very much a practical answer. Users are going to expect an article with background material while this is hot news. When it dies down, the information can be properly merged to a background article. [[User:SchmuckyTheCat|SchmuckyTheCat]] ([[User talk:SchmuckyTheCat|talk]])
-:::Absolutely agree. Not every wild-eyed hypothesis needs an encyclopdia article. -[[User:Atmoz|Atmoz]] ([[User talk:Atmoz|talk]]) 22:12, 17 February 2011 (UTC)
-== wee need a pick ==
-like wee can uss a pick from Celestia that can work  <small><span class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Freiza667|Freiza667]] ([[User talk:Freiza667|talk]] • [[Special:Contributions/Freiza667|contribs]]) 14:53, 16 February 2011 (UTC)</span></small><!-- Template:Unsigned --> <!--Autosigned by SineBot-->
-:The problem with [[Celestia]] is that it just generically draws a [[gas giant]] either close or far from a host star. That is not as good as a ''NASA reviewed'' artists rendering, and thus would not add depth to the article.. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 20:01, 16 February 2011 (UTC)
-=== a good pick? ===
-[[File:Tyche.JPG|thumb|375px|Tyche compared to Jupiter and Earth]] U think it looks good enough? -- Freiza667
-:We do need to avoid [[Wikipedia:No original research|original research]].  At 1 [[Jupiter mass|M<sub>J</sub>]] it would be basically the size of Jupiter.  [[TrES-4b]] (also 1M<sub>J</sub>) is larger than Jupiter because it is a [[hot jupiter]].  We do not know if Tyche even exists and even if it does, we do not know how far away it is.  According to the hypothesize, The further out it is, the more likely it is to be more massive. Even at 4 M<sub>J</sub>, this object may [[Brown dwarf#Distinguishing low-mass brown dwarfs from high-mass planets|barely be larger in volume]] than Jupiter, though I have not looked up the rules for sub-brown dwarf diameters recently. Do you have a reliable reference that a 2-4 M<sub>J</sub> [[gas giant]] should have this diameter? -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 21:45, 17 February 2011 (UTC)