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Forum » SpaceEngine » Science and Astronomy Discussions » The scale of the universe
The scale of the universe
dontpanicDate: Wednesday, 11.07.2012, 13:29 | Message # 16
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No, I don't think nothing is infinite, nothing is just that, NOTHING. It doesn't exist, so it can't be either finite or infinite. Space is not nothing, space, or more accurately, spacetime, is part of the universe, which was created as a result of the big bang.
 
CaelDate: Wednesday, 11.07.2012, 14:47 | Message # 17
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Well, nothing might be exactly that - nothing. But given that something (or nothing) is nothing, isn't it equally infinite in size? Do you have a point of nothing? Or does "nothing" take up the entire nothingness?

I'm not sure what answer I'd give myself, mind you.
 
dontpanicDate: Wednesday, 11.07.2012, 16:05 | Message # 18
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Nothing doesn't take up anything, because it doesn't exist. Nothing is not infinite, it's just not there. You can't refer to nothing as an object or entity, it is more like a state. Nothing WAS before the big bang. Nothing no longer IS. That's it.
By saying that nothing is nothing, I meant not that nothing is something, but that nothing is just what the word says: A lack of anything.
Pretty confusing stuff... wacko
 
TalismanDate: Wednesday, 11.07.2012, 19:16 | Message # 19
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Quote (Cael)
If I'm getting Talisman right


Yes. cool

Quote (dontpanic)
Nothing doesn't take up anything, because it doesn't exist. Nothing is not infinite, it's just not there. You can't refer to nothing as an object or entity, it is more like a state. Nothing WAS before the big bang. Nothing no longer IS. That's it.
By saying that nothing is nothing, I meant not that nothing is something, but that nothing is just what the word says: A lack of anything.


As humans we can't really define anything correctly, why does nothing not take up anything? How does nothing not exist? It is nothing, it was there before there was something, it had to have existed. There was something before the big bang, some sort of mechanic that caused it and caused time to start, it didn't just happen just because. It was caused by something we can't understand whether it's quantum mechanics or the laws of physics. But it's possible we will never find out what caused it.

There has to be some sort of "media" or canvas for the universe to be created on, and expand onto. Whether this is a completely infinite amount of nothingness expanding in all directions, we don't know. cool







Edited by Talisman - Wednesday, 11.07.2012, 19:17
 
HarbingerDawnDate: Thursday, 12.07.2012, 03:43 | Message # 20
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Quote (Talisman)
As humans we can't really define anything correctly, why does nothing not take up anything?

We can correctly define anything that we choose to; concepts have no objective definition, they are human abstractions. The word nothing means non-existence. It is not a thing, it is not even a state, it is a lack of both of those.

Quote (Talisman)
There was something before the big bang, some sort of mechanic that caused it and caused time to start, it didn't just happen just because.

Probably so. It could have been that the Big Bang singularity burst forth from another universe, maybe as a byproduct of its physical laws, maybe as an accident from some kid's science experiment. Or maybe it was something completely different.

Quote (Talisman)
There has to be some sort of "media" or canvas for the universe to be created on, and expand onto.

Possibly, not necessarily. There's no particular evidence to say that it did, and it's certainly possible to imagine scenarios in which it did not. So there's not really any reason to take a stand on that issue.





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DoctorOfSpaceDate: Thursday, 12.07.2012, 05:29 | Message # 21
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Quote (Talisman)
There was something before the big bang, some sort of mechanic that caused it and caused time to start, it didn't just happen just because. It was caused by something we can't understand whether it's quantum mechanics or the laws of physics. But it's possible we will never find out what caused it.


I think we are already on the verge of understanding where the universe came from. The laws of physics pretty much show the universe quite possibly came from, well, nothing.

http://www.youtube.com/watch?v=OAnrYnMxIGo

Not proven entirely but it does make quite a bit of sense.

There are quite a few videos of talks that Lawrence Krauss has given and they're quite interesting.
http://www.youtube.com/watch?v=VdUYw59ztyw





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Edited by DoctorOfSpace - Thursday, 12.07.2012, 05:30
 
dontpanicDate: Thursday, 12.07.2012, 13:58 | Message # 22
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That's a pretty interesting discussion: http://www.youtube.com/watch?v=YUe0_4rdj0U&feature=related
 
TalismanDate: Thursday, 12.07.2012, 17:51 | Message # 23
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Quote (DoctorOfSpace)
I think we are already on the verge of understanding where the universe came from. The laws of physics pretty much show the universe quite possibly came from, well, nothing.

http://www.youtube.com/watch?v=OAnrYnMxIGo


That was a very good video, but you realize what he said right? Quantum mechanics make "nothingness" unstable.

Which means quantum mechanics existed before the big bang and as he said, quantum mechanics caused the big bang to happen. cool





 
DoctorOfSpaceDate: Thursday, 12.07.2012, 19:20 | Message # 24
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That was a very good video, but you realize what he said right? Quantum mechanics make "nothingness" unstable.

Which means quantum mechanics existed before the big bang and as he said, quantum mechanics caused the big bang to happen. cool


Boggles the mind a bit doesn't it?





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TalismanDate: Saturday, 14.07.2012, 07:16 | Message # 25
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Boggles the mind a bit doesn't it?


Indeed, I really do hope we figure out more at least in my life time. Existence is such a strange but awesome concept. cool







Edited by Talisman - Saturday, 14.07.2012, 09:05
 
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