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Old 04-18-2012, 01:55 PM
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Default The Expanding Universe

Last evening I watched a youtube video on the expanding Universe and the speed which it is expanding. The speed, if I understand correctly is directly related to the light phase shift. If a galaxy is moving away at the speed of light, the phase shift indicate by Z=1.4.

But with Hubble, it has been determined that some far away galaxies are moving away at such speed that the phase shift can be as high as Z=8. Supposedly, this indicates tha the speed is several time the speed of light.

This was further explained is due to the expansion of space-time. Eventually, according to the explanations I have read, these galaxies will fade and disappear as their speed continues to increase.

I couldn't reference you-tube references from this workstation, but they are easily found. Here is a link to a PDF document on The Expanding Space Time Theory: http://www.estfound.org/downloads/thebook.pdf.

Since, if a galaxy, reaches a certain speed, or gets so far away, you will be unable to observe it. There will never be a means of determining the size of the Universe.

Another fact I came across is that galaxies are evenly spread throughout the Universe. It made me think of the properties of gases which expand to fill the available space.

Who needs science fiction literature. Current theory is becoming better than fantasy.
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Old 04-19-2012, 03:07 AM
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Here is a link to a PDF document on The Expanding Space Time Theory: http://www.estfound.org/downloads/thebook.pdf.

This is a "fresh" theory that claims there was no big bang, there are no black holes, and that it is space time that is expanding, and not just space.

For those (such as myself) who are wondering about this business of faster than light space (or otherwise) expansion:

http://imagine.gsfc.nasa.gov/docs/as...s/070904a.html
http://curious.astro.cornell.edu/que...php?number=575
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Old 04-19-2012, 11:54 PM
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I have read articles that cosmologists believe that the universe is expanding at an accelerated rate. Another theory states that the speed of light is constant and nothing can move faster than the speed of light. My question is if the universe is accelerating, eventually should it not reach a speed faster than the speed of light? Has anyone investigated the question as to what will happen if the expansion of the universe breaks the light speed barrier?


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Thanks for your question. It is true that nothing can go faster than the speed of light. And it is also true that our universe is expanding faster than the speed of light today. This sounds like a contradiction, but actually it is space itself that is expanding faster than the speed of light, driving objects further apart at an increasing rate. The concept of space expanding faster than the speed of light is not in contradiction with the limit for zero mass particles, ultimate speed. A nice discussion of this can also be found at: http://curious.astro.cornell.edu/que...php?number=575

Quote from NASA website
So here is my confusion. Do I think of space as a measurement or a medium? Is a yard further away from our galaxy longer than one closer to our galaxy? I measure speed by the time it takes something to move a unit of distance. When looking at illustrations of the impact of gravity, they show the distortion of space. Theorectically, distance can be stretched. So, is the space in the Universe being shoved apart or pulled apart?
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Old 04-20-2012, 03:14 AM
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Default Raisin D'Etre

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Theoretically, distance can be stretched. So, is the space in the Universe being shoved apart or pulled apart?
I'm no astrophysicist; but it strikes me that considering the absurd distances we're talking about, you can almost consider space to be undistorted.

BTW, I'm not referring to when view a star that appears nears our sun, during an eclipse, versus when it is further away. In this case, the parallax effect due to the sun's bending of the star's light is nothing we can ignore. Here's a good movie on what a parsec is.

In any case, consider that in order for two galaxies to be be moving away from each other faster than the speed of light, they must be separated by around 4,200 megaparsecs (130,000,000,000,000,000,000,000 kilometers). I appears that the universe is expanding, like a loaf of raisin bread, in all directions and that it has no center.
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Old 04-20-2012, 04:15 PM
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Default The constant that wasn't/isn't

Hubble's Constant:

Ratio of (Velocity of a galaxie due to expansion of Universe) / ( Distance from Earth)

But by definition, it isn't constant and will change over time. It only measures the rate of expansion today. An article in Science Daily attempts to explain how one of the latest examples of calculating Hubble's Constant was performed.

http://www.sciencedaily.com/releases...0726101719.htm

I was intrigued by what is causing this expansion. Then I located this article:

http://scienceblogs.com/startswithab...rse_expand.php

So why am I interested in this stuff? Actually, I find it a little bit scary. But when considering the scale of all this, it makes me wonder about what defines God? And to what degree does God interact with all of this? When I consider all of this, I think that angels (agents working under the influence of God) must exist.
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Old 04-20-2012, 04:55 PM
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But when considering the scale of all this, it makes me wonder about what defines God? And to what degree does God interact with all of this? When I consider all of this, I think that angels (agents working under the influence of God) must exist.
For what it's worth, Doctor Dahesh assured me that knowing what God is, is nothing we will ever be able to achieve; that not even prophets knew.

As to what degree God interacts with all of this? I would say that it depends on the situation. At worst, the system and its physical laws, which God put in place, is self-governing. At best, you have Miracles that break the "laws of nature" for whatever reason that might be. Somewhere in there, I don't have a problem believing that "God," through a complex chain of command, delegates certain tasks to higher beings, or spirits we might refer to angels, or in other cases, aliens.

BTW, here is a good TV show about stars: http://www.youtube.com/watch?v=EOTqe...eature=related
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Old 04-21-2012, 12:57 AM
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Default The Universe is Flat!?!?

I've seen this explanation more than once. But this video seems to be more simply stated:

http://www.youtube.com/watch?v=zqb1l...feature=relmfu

Columbus would have been disappointed.

Last edited by Loup Solitaire; 04-21-2012 at 10:26 PM.
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