How can Space go on "Forever"? Don't get it.. .Explain pls.
Discussion
Because if it stopped there would need to be some sort of solid edge that is was not possible to go through.
Then we would have to ask what was beyond that – and we would try and go through it.
It’s just as mind baffling to presume the universe is not infinite as it is to presume it is.
Then we would have to ask what was beyond that – and we would try and go through it.
It’s just as mind baffling to presume the universe is not infinite as it is to presume it is.
Snowboy said:
Because if it stopped there would need to be some sort of solid edge that is was not possible to go through.
Then we would have to ask what was beyond that – and we would try and go through it.
It’s just as mind baffling to presume the universe is not infinite as it is to presume it is.
Which brings up the possibility of Men in Black type scenarios, that we could actually be inside something much bigger? In which case does that mean we could have life inside us? It's a real mind scrambler isn't it...Then we would have to ask what was beyond that – and we would try and go through it.
It’s just as mind baffling to presume the universe is not infinite as it is to presume it is.
onyx39 said:
You ask the question of how "big" space is, and the general answer is "infinite"... cannot grasp this...
Imagine a straight line drawn on the ground about 50 metres long. Now walk from one end to the other and back again. Easy.Then draw another line about 50 metres long, this time drawn as a curve with one end connected to the other. Yes, a circle. Now walk from one end of the line to the other....
I've read the the Universe is doughnut shaped, if you were to travel in the same direction you'd eventually end up where you started. How that works I don't know... Why do you have to conform to the doughnut? You're not actually going straight if you are going in circles? What's outside of the doughnut? A yum yum is straight, does this mean that there are alternative universes that aren't circular?
You have to remember that we only 'see' a small fraction of the actual universe. Our eye's can only see a small part of the electromagnetic spectrum, and our ears the same. Everything you perceive as normal is effectively just normal on earth. If you try and apply our 'normal' boundaries (i.e. solid, liquid, gas etc) to the rest of the universe it doesn't really work. It's totally natural to do so as we tend to understand things through association, but you have to think outside the box, for want of a better expression, to start to grasp the actual reality of the universe.
As has already been said, if the universe wasn't infinite, there would need to be an end. This itself is actually far harder to justify/quantify than no end. Questions like, what's beyond and why is it there are much, much harder to answer and also completely outside all known physics.
As has already been said, if the universe wasn't infinite, there would need to be an end. This itself is actually far harder to justify/quantify than no end. Questions like, what's beyond and why is it there are much, much harder to answer and also completely outside all known physics.
Hudson said:
I thought Mr Hawking said it was constantly expanding, and will eventually run out of oomph (needs a remap), and thus will contract and collapse on itself, killing us all and causing another big bang?
Or have i just butchered years of scientific research
It is one of many theories, but not a theorum (a theory that has been proven beyond all doubt). There are also other widely circulating theories about all of time and space actually existing simultaneously, and what we perceive as real is in fact, nothing more than a reflection of what is really there. Very, very hard to understand, and also equally as much of a stab in the dark as Hawkings theory!Or have i just butchered years of scientific research
Hudson said:
I thought Mr Hawking said it was constantly expanding, and will eventually run out of oomph (needs a remap), and thus will contract and collapse on itself, killing us all and causing another big bang?
Or have i just butchered years of scientific research
This is what I don't get, if the universe is expanding, that means there is a finite end to it (albeit one which moves outwards). If this is true, and it were possible to reach the end of the universe, then would you not hit a solid thing (outside boundary of universe) and then have to wait a little bit for it to expand, then go a little further and repeat?Or have i just butchered years of scientific research
TomN94 said:
I always think, our galaxy, the milky way only has "one" planet with life on it, is there in other galaxies another planet with life on it, and are they more or less advanced than our life?
I am a firm believer of this.I think it shows arrogance of the highest level to assume that we are the only "intelligent life" anywhere?
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