Do you think there's a planet the size of our galaxy?
At a certain point gravity over comes mass. Only reason stars can become so big is because of the nuclear reaction. Without that they just collapse in on them self.
Also atoms dictate the size at something is stable. White dwarfs go unstable and supernova at something like 1 and a half times the size of the sun. So yeah, planet no chance.
@MariachiMacabre: Maybe I'm too ignorant to think this, but maybe the known universe isn't all there is? I always see the edge of it, and hear about how "this is the end of it, this is the line where stars don't exist" or whatever, but whatever is beyond the known universe that's black to us, could hold something like it. I guess my imagination is overlapping the logical part a bit.
I'm pretty sure that anything that large anywhere in the galaxy would create a gravity well that we could see from earth, unless it was so far away that the light hadn't reached us yet. Since we haven't seen any in the observable universe, I highly doubt that there are any elsewhere.
No. When you get past Jovian-sized planets, the immense gravity begins to produce the conditions necessary for nuclear fusion. anything 80-90 times the size of Jupiter will be a star.
@haffy: Yes, to our knowledge, but there's so much we don't know. Heck, we could be all wrong about it all as it is right now; not that I am saying we are, but I'm just pointing out how anything could be. I mean, there could be other universes that do. There could even be a planet as large as our universe! AHHH! No, ha ha. You could be right though, everything to know about our universe, or anything that exist, could possibly be limited to what you say.
@Dany: @SexualBubblegumX: @MikkaQ: @allworkandlowpay: @nintendoeats: Why is it that just because we believe we know how things work in existence, in this case, our known universe, or beyond, the possibilities are held back to our limited knowledge? I'm just saying, what if there's another universe that is in 5D? Which, sound ridiculous to even bring up, but as with such a topic though, it's not yet possible, or never will be possible to know such a thing. I'm also not saying I disagree with any one of you about this.
@NTM said:
@Dany: @SexualBubblegumX: @MikkaQ: @allworkandlowpay: @nintendoeats: Why is it that just because we believe we know how things work in existence, in this case, our known universe, or beyond, the possibilities are held back to our limited knowledge? I'm just saying, what if there's another universe that is in 5D? Which, sound ridiculous to even bring up, but as with such a topic though, it's not yet possible, or never will be possible to know such a thing. I'm also not saying I disagree with any one of you about this.
Okay, sure. But when you start to consider the idea of alternate universes, anything is possible, so it's kinda pointless to ponder.
Even based within infinite sets, it's hard to conceptualize.. Planet would not be the right term...unless exact conditions allowed for it.. some kind of precise balance of factors. I'll stick with there may be an infinite set of me, with infinite sets of variance of me. That's trippy enough, but allowed if multiple universes, or even infinite this universe, has validity.
@NTM said:
@Dany: @SexualBubblegumX: @MikkaQ: @allworkandlowpay: @nintendoeats: Why is it that just because we believe we know how things work in existence, in this case, our known universe, or beyond, the possibilities are held back to our limited knowledge? I'm just saying, what if there's another universe that is in 5D? Which, sound ridiculous to even bring up, but as with such a topic though, it's not yet possible, or never will be possible to know such a thing. I'm also not saying I disagree with any one of you about this.
Because science. That is reason enough.
@Xeiphyer said:
Not possible based on the current model of the universe as we know it.
The most accurate post in this thread.
@NTM said:
@Dany: @SexualBubblegumX: @MikkaQ: @allworkandlowpay: @nintendoeats: Why is it that just because we believe we know how things work in existence, in this case, our known universe, or beyond, the possibilities are held back to our limited knowledge? I'm just saying, what if there's another universe that is in 5D? Which, sound ridiculous to even bring up, but as with such a topic though, it's not yet possible, or never will be possible to know such a thing. I'm also not saying I disagree with any one of you about this.
You are talking to a philosophy major who two philosophy of science courses last year, and has a lasting interest in the subject. The only reason that I'm not poking holes in your logic right now is that it's two in the morning and I'm writing this from a bed in which I intend to sleep. Now. Good night.
Basically your argument is - since we don't fully know the universe, that anything is a possibility.
My rebuttal? Can you prove that there isn't a massless, invisible spaghetti monster flying over your head right now? Just because you can't prove it - doesn't mean it exists.
To find the truth, you must not only be courageous enough to think of new possibilities but also be rational enough to not get too excited in fantasies. Why can't a planet the size of our galaxy exist? Because such a massive object can not sustain itself over its own gravity.
Also, you should check this link out: http://htwins.net/scale2/
It turns out, the estimated size of the universe is bigger than the observable universe.
No.
To extrapolate:
The probability of the existence of a galaxy-sized planet is roughly equivalent to that of a theistic deity. They both are backed by the same amount of evidence(0.) Although, at least, one could argue that regular planets existing leans the probability slightly in their favor as opposed to the deities.
how would that even work, its gravtational pull would pull everything towards it, or it would collapse under its imsne pressure
@TobbRobb said:
Couldn't there be a planet shaped gas cloud of that size? Or is that not physically possible either?
It would have to have a very low density to be so disperse - and even then certain segments of that cloud might aggregate together to form stars.
@NTM said:
@Xeiphyer: True, but I'm not just asking about what's limited to our knowledge of the known universe.
Well then you are asking a question that no one here can answer in our lifetime. As others have stated, our current knowledge denies such an idea because things are only able to get so big in our universe. Is there a possibility that there is some realm outside out current universe that allows the creation of a planet that big, yes anything is possible, but you can then start to say can there be a planet made of pure jelly beans. Also for fun, if our universe is simply an atom of some piece of matter in another universe, and in that universe there are planets, then technically speaking the planets it that universe are bigger then galaxies in our universe.
Which means that it is entirely possible.Not possible based on the current model of the universe as we know it.
@Jace said:
No.
To extrapolate:
The probability of the existence of a galaxy-sized planet is roughly equivalent to that of a theistic deity. They both are backed by the same amount of evidence(0.) Although, at least, one could argue that regular planets existing leans the probability slightly in their favor as opposed to the deities.
I'm just going to say...no.
i don't think it's possible.
@SSully: But I wasn't asking if anyone could actually answer it, I was asking if anyone thinks there could be. I didn't say, show me proof that it is possible or not. It's all hypothetical. Also, I don't think just because you're the smartest scientist in the world, or even educated in it, you can say it is or not. I think this is being somewhat blown out of proportion. I asked a simple question, and maybe I sounded ignorant to others because I questioned their reasoning, but I wasn't saying anyone was wrong. I don't have a problem with people saying no, I just hope people keep thinking about stuff like it and aren't closed minded because of our limited knowledge. It's like if I went back in time and asked someone if the world was possibly round, then they gave me all these reasons as to why it probably isn't. Maybe they shouldn't think about it on a day to day basis, and maybe not the exact thing I asked about, but just space in general.
@ComradeKhan said:
@Xeiphyer said:Which means that it is entirely possible.Not possible based on the current model of the universe as we know it.
Yeah, and we could all just be figments of Nic Cage's imagination. Which is more plausible? That's a trick question, for anyone thinking of responding.
@NTM said:
@SSully: But I wasn't asking if anyone could actually answer it, I was asking if anyone thinks there could be. I didn't say, show me proof that it is possible or not. It's all hypothetical. Also, I don't think just because you're the smartest scientist in the world, or even educated in it, you can say it is or not. I think this is being somewhat blown out of proportion. I asked a simple question, and maybe I sounded ignorant to others because I questioned their reasoning, but I wasn't saying anyone was wrong. I don't have a problem with people saying no, I just hope people keep thinking about stuff like it and aren't closed minded because of our limited knowledge. It's like if I went back in time and asked someone if the world was possibly round, then they gave me all these reasons as to why it probably isn't. Maybe they shouldn't think about it on a day to day basis, and maybe not the exact thing I asked about, but just space in general.
Making an argument about saying something exists, because you can't prove it doesn't exist, is kind of pointless.
You are right that no body can prove you wrong. But this is the same kind of argument religious people will bring up. Arguing about the possible existence of something, based on information we don't know about.
It's a pretty pointless exercise, which I'm sure many people will argue on either side of. I'm not saying it's necessarily a bad thing. But due to the nature of the argument, the subject won't really ever progress because each person brings different rules to the argument. The only real thing you gain from something like this is finding out the perspective of a person, because you sure as hell won't learn anything about the subject being discussed if there is no logical rule set being followed.
Also go read some stuff about philosophy. Because it seems like you would be interested in that area.
well that would explain the voices.@ComradeKhan said:
@Xeiphyer said:Which means that it is entirely possible.Not possible based on the current model of the universe as we know it.
Yeah, and we could all just be figments of Nic Cage's imagination. Which is more plausible? That's a trick question, for anyone thinking of responding.
and the iguanas
If you think that we are anything other than a figment of Nic Cage's endless imagination then you, sir, are mistaken.@ComradeKhan said:
@Xeiphyer said:Which means that it is entirely possible.Not possible based on the current model of the universe as we know it.
Yeah, and we could all just be figments of Nic Cage's imagination. Which is more plausible? That's a trick question, for anyone thinking of responding.
@ComradeKhan said:
@Xeiphyer said:Which means that it is entirely possible.Not possible based on the current model of the universe as we know it.
If you want to be an idiot about it, technically anything is "entirely possible", because science rarely deals in absolutes. Any scientific law, theory, rule, or hypothesis is ultimately saying "Given what we know about the universe, we predict this will happen". It's not a guarantee, because our perception of the world is rarely perfect, plus we might all be in The Matrix and suddenly all of the laws of physics could get changed by The Architect.
But assuming that the rules of the universe are in any way consistent (which they have been thus far), his question is straightforward and obvious, because we know how gravity behaves in these kinds of simple situations (hell, we even know how gravity behaves in weird scenarios like in a black hole), and his stupidly large planet would've already collapsed in on itself and become something else.
So by all means, if you want to disregard all of science's predictions because "hey man, could Jesus microwave a burrito so hot that even he couldn't eat it?", go right ahead, but it's not going to get you anywhere.
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