Talk:List of planet types
Do we need to have separate pages for all those? With the amount of information available it would make more sense to put them all on one page. If we would still want separate pages, they should be renamed to their singular forms. -- SvdB 11:10, 14 Oct 2004 (CEST)
I'm working on moving all the info from the world type pages to this page. For the types which have no page, I will just put "No info has been entered in the Ultranomicon on this world type." --Jacius 19:50, 23 Oct 2004 (CEST)
Ok, done! I changed the plan a bit: I put a notice at the top that many types are missing information, and moved all the ones that don't have info to a list at the bottom (and unlinked them all). The ones that do have info have their own subsection, so you can link to them, like this: [[List of planet types#Water]] (for the Water world type) --Jacius 20:48, 23 Oct 2004 (CEST)
"A moon cannot be a Gas Giant."
Is this a fact? Why? -Fadookie 03:34, 25 Oct 2004 (CEST)
I'm almost certain that it never occurs in SC2, but beside that, it's physically very unlikely. The planet would have to be incredibly large to have a gas giant for a moon (gas giants themselves have to be quite big to keep from dissipating), and in such a case the planet would most likely siphon the gas from its moon until nothing of the moon remained. --Jacius 05:24, 25 Oct 2004 (CEST)
I'm looking through the planet generation code, and while this code isn't the clearest in the game, I don't see such a restriction (that's no guarantee though; I'm just browsing through it). As for reality, planets can have a body their own size as a companion. You'd be talking about a double-planet then instead of a moon. As for "siphoning", that all depends on the distance between the planets. -- SvdB
Another thing, I don't know where you generate this list, but I've got the impression you got it from my minerals page. In any case, it's easier to look at plandata.c in the source, which is organised by planet. It also includes more information (like tectonics, surface density, atmosphere, colour). This stuff could go in a similar table as I did for the minerals page. -- SvdB 10:02, 25 Oct 2004 (CEST)
Good idea. The list was already here when I started editing, I just started filling in info as I played the game. It would probably be easier to look at plandata.c :) A table would be good, too.
If you had two gas giants "orbiting" each other, their gravities would be very strong (because they are both so large), and they would probably be pulled together and eventually merge. If one gas giant is a good deal bigger than the other, the larger one would probably slowly pull the matter from the smaller one, or simply pull the smaller one in. Of course, if they are very far from each other, the gravity between them would be decreased, so they wouldn't necessarily be pulled together. It would be a delicate balance between being pulled together and flying apart. But I'm no astrophysicist, so I may be wrong.
I have never, ever seen a gas giant as a moon in SC2, though, which was the primary reason I put that in the article. This article isn't an astronomy lesson, it's a list of the planet types in a game. I'll take a look at the code/data to see if it ever occurs. --Jacius 02:40, 26 Oct 2004 (CEST)
I have never encountered a gas moon, but if we make a blatant statement like "a moon cannot be a Gas Giant" we should support it. The support could be as simple as saying that star control does not contain any gas moons, but we should back it up in some way. -Fadookie 04:35, 26 Oct 2004 (CEST)
Good point. I made the sentence less certain, and specified that this applies to SC2. I'll check the code tomorrow or sometime to see if there are any gas giant moons in SC2, and then we can make a more certain claim. --Jacius 05:02, 26 Oct 2004 (CEST)
It's not really relevant to the wiki, but a little physics lesson: without any external influence, an object (for instance a planet) with a specific speed will retain that speed. If you put another object in its proximity (another planet), there will be a force pulling them towards eachother. That force over time changes the speed of the object. But if the pull is not large enough and the speed was not slow enough, then by the time the direction in which the planet was moving has changed to the direction where the other planet was in the first place, it will have moved enough so that they will miss eachother. The direction in which they need to go has changed. This balance is not delicate. If you change the mass of one of the objects a little, all that changes is the shape of the orbits, and the speeds during the orbits. -- SvdB 16:16, 26 Oct 2004 (CEST)