Talk:Tachocline

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Fossil Field?

There is a line in this about a "fossil field". What does this mean in terms of Solar Phenomenon? Can someone with an understanding of Solar Physics confirm that "fossil fields" are true solar phemomena? Would you please write a brief description? I am less than a novice in this field an the term is a bit confusing, and in this context (wikipedia) it looks like vandalism without further explanation. —Preceding unsigned comment added by 204.110.232.186 (talk) 19:40, 10 November 2009 (UTC)[reply]

TBH, I don't know. I am only familiar with the term "fossil field" in terms of paleontology, and despite some background in solar physics I have never heard of it in any other context. The phrase was added with this edit by Rex the first (talk · contribs) who is still an occasional user here. Perhaps if you were to ask for further explanation on that user's talk page, he might eventually get back to you. Astronaut (talk) 17:46, 13 November 2009 (UTC)[reply]

A "fossil field" is a magnetic field that has survived from an earlier stage in the Sun's evolution. This is in contrast to a dynamo-generated field, that is permanently destroyed (by turbulent diffusion )and re-generated (by the dynamo mechaism).Turritus (talk) 13:26, 12 April 2010 (UTC)[reply]

Question about the lead sentence

It currently starts "The tachocline is the transition region of the Sun..." Okay, don't ALL STARS, above a certain mass, have a tachocline? Geo Swan (talk) 21:54, 12 March 2019 (UTC)[reply]

You can see from your comment, that "all stars" would be an exaggeration. The properties and fates of stars depends on their masses; to say some stars above a certain mass may have a tachocline may make sense. But what mass would that be? And it would certainly not be all stars then. Then too, there are stellar remnants above the mass threshold without tachoclines, which would also prove confusing to readers. I would say the sentence as is seems good enough, given what we know about stellar magnetism.--Astroceltica (talk) 17:03, 13 March 2019 (UTC)[reply]

Don't all main sequence stars of more than 0.3 solar mass have a tachocline?

@Astroceltica:, no, the current sentence is completely inadequate, since the very first sentence incorrectly says only our Sun has a tachocline. Geo Swan (talk) 12:26, 14 March 2019 (UTC) 010140101 he first kills his prey[reply]

The Sun is 4 billion Years old that all the planets surrounds the Sun in space there like eight planets in the solar system which all the planets surrounding the Sun as with there are many black hole in the space

The first planet it called Mercury with is closer to the Sun the second planet is Venus Venus stays closer to mercury which Venus has clouds and it rain acid inside of Venus the third planet is our planet with 7.5bil people live on it with there is alot of countries that some people may speak different ways of countries the fourth planet is Mars which aliens live on there Mars is red and light the with thing on top of Mars it like sand the fifth planet is a gas giant which is called Jupiter. Jupiter has red banded clouds which Jupiter is the biggest planet in the solar system it take long to get to Jupiter the sixth planet is Saturn still like Jupiter but it has rings which The top of Saturn there is like a blue thing the seventh planet is Uranus which is blue but is still a gas giants the planet is cold if you go inside of it the eight planet is neptune is still like Uranus but is dark blue is still a cold planet like Uranus but Uranus dose have rings but neptune dose not have and there is one dwarf planet which is called Pluto has ice because Pluto can't be seen by the Sun the water is ice and the air is deadly there are eight planets in the solar system and one dwarf planet and they orbit the Sun 82.22.108.212 (talk) 15:57, 29 June 2022 (UTC)[reply]