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Could the universe be older and bigger than we can see?
Here's a question that's been puzzling me. If the universe is
expanding, and the further an object (e.g. a galaxy) is away from us, the faster it is moving away from us. Are there parts of space so far away from us that it's expanding away from us *faster* than the speed of light? From what I understand the speed of light limitation doesn't apply to the expansion of space itself. Therefore the Cosmic Microwave Background Radiation isn't the cloak that surrounds the secrets of the Big Bang, but just the curtain around a part of the universe that is now out of contact with us. An endlessly expanding universe sure, but one that never had a beginning? Yousuf Khan |
#2
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"Yousuf Khan" wrote in message ps.com... | Here's a question that's been puzzling me. If the universe is | expanding, Is it? | and the further an object (e.g. a galaxy) is away from us, | the faster it is moving away from us. So it would be accelerating base on that idea.... Are there parts of space so far | away from us that it's expanding away from us *faster* than the speed | of light? Faster than the speed of light, relative to what? Us? The source? The "nothing" between us and the star that is part of of the galaxy that is red-shifted? | From what I understand the speed of light limitation doesn't | apply to the expansion of space itself. Ah.... from what you understand... I see. What is it that you *see*, exactly? Androcles. | Therefore the Cosmic Microwave Background Radiation isn't the cloak | that surrounds the secrets of the Big Bang, but just the curtain around | a part of the universe that is now out of contact with us. An endlessly | expanding universe sure, but one that never had a beginning? | | Yousuf Khan | |
#3
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On 24 Aug 2005 17:55:15 -0700, "Yousuf Khan"
wrote: Here's a question that's been puzzling me. If the universe is expanding, and the further an object (e.g. a galaxy) is away from us, the faster it is moving away from us. Are there parts of space so far away from us that it's expanding away from us *faster* than the speed of light? From what I understand the speed of light limitation doesn't apply to the expansion of space itself. Therefore the Cosmic Microwave Background Radiation isn't the cloak that surrounds the secrets of the Big Bang, but just the curtain around a part of the universe that is now out of contact with us. An endlessly expanding universe sure, but one that never had a beginning? Yousuf Khan If we never know, does it matter? |
#4
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"Charles" wrote in message ... | On 24 Aug 2005 17:55:15 -0700, "Yousuf Khan" | wrote: | | Here's a question that's been puzzling me. If the universe is | expanding, and the further an object (e.g. a galaxy) is away from us, | the faster it is moving away from us. Are there parts of space so far | away from us that it's expanding away from us *faster* than the speed | of light? From what I understand the speed of light limitation doesn't | apply to the expansion of space itself. | | Therefore the Cosmic Microwave Background Radiation isn't the cloak | that surrounds the secrets of the Big Bang, but just the curtain around | a part of the universe that is now out of contact with us. An endlessly | expanding universe sure, but one that never had a beginning? | | Yousuf Khan | | | If we never know, does it matter? To whom? Androcles. |
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On Thu, 25 Aug 2005 01:41:00 GMT, "Androcles" Androcles@ MyPlace.org
wrote: "Charles" wrote in message .. . | On 24 Aug 2005 17:55:15 -0700, "Yousuf Khan" | wrote: | | Here's a question that's been puzzling me. If the universe is | expanding, and the further an object (e.g. a galaxy) is away from us, | the faster it is moving away from us. Are there parts of space so far | away from us that it's expanding away from us *faster* than the speed | of light? From what I understand the speed of light limitation doesn't | apply to the expansion of space itself. | | Therefore the Cosmic Microwave Background Radiation isn't the cloak | that surrounds the secrets of the Big Bang, but just the curtain around | a part of the universe that is now out of contact with us. An endlessly | expanding universe sure, but one that never had a beginning? | | Yousuf Khan | | | If we never know, does it matter? To whom? Androcles. us |
#6
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It still has a beginning.
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#7
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Dear Yousuf Khan:
"Yousuf Khan" wrote in message ps.com... Here's a question that's been puzzling me. If the universe is expanding, and the further an object (e.g. a galaxy) is away from us, the faster it is moving away from us. Not really. The motion of the object is unsurprising when compared to stars of the same age. Some of which were our progenitors. So expansion of space doesn't involve "kinetic motion" or mysterious "acceleration of mass". (Acceleration of expansion is a different matter.) Are there parts of space so far away from us that it's expanding away from us *faster* than the speed of light? We expect so, yes. From what I understand the speed of light limitation doesn't apply to the expansion of space itself. Correct, since the "endpoints of observation" are not local. Therefore the Cosmic Microwave Background Radiation isn't the cloak that surrounds the secrets of the Big Bang, It is believed to be, yes. Choose a different word than "isn't"... but just the curtain around a part of the universe that is now out of contact with us. An endlessly expanding universe sure, but one that never had a beginning? It is also expected to have had a beginning. The current distribution of matter around us is not pure iron, which an inifnite Universe would produce. Nor are there iron to hydrogen conversion engines predicted or observable, with anywhere near the amounts required. http://alumni.imsa.edu/~mhoemmen/Topics/Hubble/ .... down to the paragraph after Lemaitre's "Big Bang" Theory http://www.astro.ucla.edu/~wright/age.html "Age of the Universe" http://www.astro.ucla.edu/~wright/co...y_faq.html#OSC "What about the oscillating Universe" http://www.astro.ucla.edu/~wright/cosmo_01.htm .... and the tutorial David A. Smith |
#8
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Yousuf Khan wrote:
Here's a question that's been puzzling me. If the universe is expanding, and the further an object (e.g. a galaxy) is away from us, the faster it is moving away from us. Are there parts of space so far away from us that it's expanding away from us *faster* than the speed of light? From what I understand the speed of light limitation doesn't apply to the expansion of space itself. Therefore the Cosmic Microwave Background Radiation isn't the cloak that surrounds the secrets of the Big Bang, but just the curtain around a part of the universe that is now out of contact with us. An endlessly expanding universe sure, but one that never had a beginning? Yousuf Khan Have a read for yourself for some current resources. No Center http://www.astro.ucla.edu/~wright/nocenter.html Also see Ned Wright's Cosmology Tutorial http://www.astro.ucla.edu/~wright/cosmolog.htm http://www.astro.ucla.edu/~wright/cosmology_faq.html WMAP: Foundations of the Big Bang theory http://map.gsfc.nasa.gov/m_uni.html WMAP: Tests of Big Bang Cosmology http://map.gsfc.nasa.gov/m_uni/uni_101bbtest.html |
#9
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"Yousuf Khan" wrote in message ps.com... Here's a question that's been puzzling me. If the universe is expanding, and the further an object (e.g. a galaxy) is away from us, the faster it is moving away from us. Are there parts of space so far away from us that it's expanding away from us *faster* than the speed of light? From what I understand the speed of light limitation doesn't apply to the expansion of space itself. yes there are parts of the univ. we can't see...yet...the light hasn't had time to reach us yet. As to things moving faster than lgiht, well, yes and no, they might appear to be moving faster than light but they are not really moving through space, it is just that the space between us and them is getting bigger. |
#10
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"Charles" wrote in message ... | On Thu, 25 Aug 2005 01:41:00 GMT, "Androcles" Androcles@ MyPlace.org | wrote: | | | "Charles" wrote in message | .. . | | On 24 Aug 2005 17:55:15 -0700, "Yousuf Khan" | | wrote: | | | | Here's a question that's been puzzling me. If the universe is | | expanding, and the further an object (e.g. a galaxy) is away from us, | | the faster it is moving away from us. Are there parts of space so far | | away from us that it's expanding away from us *faster* than the speed | | of light? From what I understand the speed of light limitation | doesn't | | apply to the expansion of space itself. | | | | Therefore the Cosmic Microwave Background Radiation isn't the cloak | | that surrounds the secrets of the Big Bang, but just the curtain | around | | a part of the universe that is now out of contact with us. An | endlessly | | expanding universe sure, but one that never had a beginning? | | | | Yousuf Khan | | | | | | If we never know, does it matter? | | To whom? | | Androcles. | | | us I don't think Yousuf Khan is part of us, or he wouldn't be asking that question. Androcles |
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