utahraptor
Golden Member
- Apr 26, 2004
- 1,078
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I just hope after the Big Crunch that the universe restarts with a new seed that does not include me. I am tired of this shizen.
I just hope after the Big Crunch that the universe restarts with a new seed that does not include me. I am tired of this shizen.
Holy crap have not seen one of those in a long time, do they still make them? I remember the commercials where they had this giant fist that people would get punched by.
Yes there is evidence that the universe is expanding. In fact we can calculate the exact speed at which other galaxies are moving away from us just by the color we see. We knew it was expanding when Edwin Hubble discovered it in 1925There are no proven facts, that's why there are multiple theories on the subject. There are no proven facts because our ability to prove anything at that distance is impossible. We can't make anything but assumptions based on assumptions. All the theories make sense, but tell a different story, and that's as good as we can get at it. The theories change as the centuries go by because science comes up with new possibilities, but nothing is proven.
This.
You can have a closed (spherical) universe, a flat (sheet) universe, or an open (saddle / hyperbola) universe. As far as we can tell, the universe is flat to the best of our measurements. We can tell by calculating pi mathematically, and then by going out and measuring the radius and circumference of some very big circles.
If the universe is flat, then C/2r = pi
If the universe is closed, then C/2r < pi
If the universe is open, then C/2r > pi
I am not going to write an entire essay when anyone with two brain cells to rub together can already find the entire explanation on their own. But, in there interest of advancing education, here is a good start.
Now, let's compare the wiki's opening paragraph with my own summary...
Unfortunately for you this is not a religion thread; there are well-proven facts involved here, and they are not on your side.
The big bang was an explosion OF space, not an explosion IN space. Galaxies and such are flying away from each other because space is expanding, not so much because the galaxies are moving away from each other.
In other words the sphere is getting bigger, making the ant take longer to go all the way around.
Go home Braznor, you're drunk.
LOL, I'm still drunk. In fact I have been drinking nonstop since I got laid off.
I should have clarified earlier that even if Space is expanding (i.e unfurling) it shouldn't make all that difference in case of the Big Universal Crunch (TM)
No matter how much space is created, it shouldn't have any directional effect on the entities within except perhaps for the distance covered. I will clarify again that the center of origin point I mentioned earlier is in relativistic terms. i.e no matter the spatial coordinates, if there is an event horizon where matter reenters our universal scale of observation, the Big Crunch will be inevitable because all the matter will be returning to its relativistic point of origin with reference to each other.
How do you know space is expanding? How do you know anything is even moving? Maybe light is just bending or moving faster/slower and things just seem to be making movement. I think it's fruitless to try to define observations of things so far away, the evidence is contaminated by distance.
Glad to see you are still here! I didn't think you had been around in a long time.Your liver hates you. But I don't. Also, I'm enjoying cheap Argentinian wine. Cheers!
Theoretically if there are more spatial dimensions in existence more the three dimensions we are accomested to, then the flatness of our three dimensional space could be misleading.
Lets take the example of the flatlander ant on the sphere again. For that flatlander ant making its way in a straight line upon the surface of that sphere, the curvature is an attribute which extends beyond the scope of its two dimensional existence. For us, the structure upon which the flatlander ant is walking upon is three dimensional, but for that ant itself, since there is no concept aka effect of the third dimension of depth, there is no such attribute as the curvature of that sphere. The curvature of the sphere only becomes relevant when three spatial dimensions are considered, but for that two dimensional ant, the curvature has no relevance because it is an attribute extending above its level of existence or physical being. So for us volumetric creatures, the surface of the sphere is curved, but for that ant travelling upon the surface of that sphere, the general curvature of that sphere is as flat as the chest of Unokitty's asian girlfriend.
So in essence, the general curvature of a sphere would be flat for a 2D flatlander.
So the general flatness of our three dimensional space could well be an incomplete observation. Our three dimensional space is flat, but if it is enclosed within higher spatial dimensions, the curvature of space in such a higher spatial dimension could be immeasurable by us, perhaps as much as a 2D flatlander being trying to measure our 3D world.
In essence, our flat three dimensional space could possess a curvature in higher spatial dimensions, but our instruments might be incapable of measuring that curvature since it extends above our realm of existence.
This is all speculation, but jeez its so much fun!![]()
Uh nope. The ant on the sphere could do the experiment I just outlined and he'd find that his universe was curved.
If the ant has a string anchored to a starting position and walks in a straight line in a certain direction, then stops, turns 90 degrees and traverses a circle keeping the string the same length, and measures the distance he traverses in a circle, the divides the circumference of the circle by the radius, he'll find that C/2r < pi. He'll then know he's in a curved universe.
Furthermore, we can measure how many spatial dimensions there are by the drop in brightness from a point source of light. Light intensity, gravity, sound intensity etc all fall off as 1/r^2 where r is the distance from the source. This is a consequence of living in a 3d universe. If there was a 4d superstructure that affected our physics, all of this would fall off as 1/r^3.
So because we can measure the 1/r^2 dropoff of intensity of many physical phenomena, we know all of our physics is constrained to a 3-d universe, and because every large circle we can measure has C/2r = pi to as close as we can experimentally determine, we can say we are in a flat 3d universe.
