Talk:Tyche (hypothetical planet)

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Ask an Astrobiologist

• Ask an Astrobiologist (Astrophysicist David Morrison : August 2, 2011)

I was going to delet this as spam ^^ but then saw that it is actually a NASA article mentioning the Tyche theory, as well as the Nemesis theory (and therefore maybe a valid reference for this article, I have not read all of the NASA article though, so I can't be sure yet). The person who posted this link should have taken a moment to explain what the link was for, rather than just posting the bare link with no explanation whatsoever. -- 129.82.31.128 (talk) 03:10, 11 November 2011 (UTC)

I added the link to the talk page since it is a good link for the woo-woos to see. I have now also hyperlinked David Morrison's name for people that do not follow astronomy. But I am also not sure it would add much to the Tyche article as a reference. Nemesis (a red dwarf star/brown dwarf) is not expected to exist because it should have been fairly obvious (bright) in previous J-Band infrared surveys, but it is plausible that there is a Jupiter mass object near the edge of the solar system. -- Kheider (talk) 13:10, 11 November 2011 (UTC)

Alternative Theory for Disturbance of Sedna?

A new science article came out today which could certainly be a presentation of an alternate theory on the cause of Sedna's disturbed orbit. But it does not come right out and say it, so it could not (yet) be used as a source until there is an explicit theoretical connection drawn by scientific sources. But that may not be too far away. Here is the article (from a credible science source): http://www.sciencedaily.com/releases/2011/11/111110142102.htm -- 129.82.31.128 (talk) 03:06, 11 November 2011 (UTC)

That's referring to this idea, I think. Sedna isn't mentioned in that article, so connecting it to this hypothesis would be OR. Serendi^podous 10:49, 11 November 2011 (UTC)

A hypothetical fifth ice giant being ejected from the early solar system has nothing to do with planet Tyche. Jupiter is not massive enough to eject a body more massive than itself. See: Young Solar System's Fifth Giant Planet? for David Nesvorny's arxiv paper. -- Kheider (talk) 13:10, 11 November 2011 (UTC)

Rather than opining, the mention of this new article just alerts editors that an alternative theory along these lines might show soon, although the recent article does not mention Sedna (and so the point is just that it might be helpful to watch science news outlets-- in case a new reference does emerge). I was not promoting any theory but just staying alert to an emerging potential source.

129.82.31.18 (talk) 20:20, 11 November 2011 (UTC)

Tyche announced?

Full Results of the WISE survey were released on March 14th, 2012. So have they found Tyche yet?--98.183.187.27 (talk) 17:53, 18 March 2012 (UTC)

No. Tyche probably does not exist. -- Kheider (talk) 18:33, 18 March 2012 (UTC)

This is not trivia, please don't delete

" Whitmire and Matese speculate that Tyche's orbit would lie at approximately 500 times Neptune's distance; equivalent to 15,000 AU (2.2×10^12 km) from the Sun, a little less than one quarter of a light year. This mean that if we use the fastest spaceship up-to-date New horizons probe, 44,537 miles per hour (71,675 km/h) [11] it would take many years(about > 3504 ) to travel."

In this article it is for 2 reasons. 1) This is a hypothetical near unknown planet, the best "source" for "discovery" and cutting of if it exists or no for even most people are photos. When somebody made a photo of Earth from space it was a bigger "prove", that for many people calculations by humans thousands years ago. So it show why it this so big and hard gap to made science work on Kuiper belt. 2) Any user "from internet" or "educational"/"newspaper editor" who have basic or no knowledge can use it to show distance comparison easily for most people on Earth(and many of them don't remember what is AU, or want to calculate this - the computers are to leave the brain calculation force for creative thinking). — Preceding unsigned comment added by 89.68.103.25 (talk) 13:44, 24 May 2012 (UTC)

Yahoo answers in not a reliable source. The New Horizons trivia adds no value to the assumed orbit of this object. It can also mislead the casual reader into assuming that NH is traveling in the direction of Tyche even though if Tyche exists we do not know where it is. Is 3504 years, "many years"? This sentence is poorly worded and adds little value to the article. -- Kheider (talk) 14:01, 24 May 2012 (UTC)