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# New theory suggests that the universe is twice as old as we think

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Posted (IP: Staff) ·

Physicist Rajendra Gupta takes a look at why the universe might actually be 26.7, rather than 13.8 billion years old.

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I'll sleep a lot better now I know this.

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I do have a question or two, please forgive my ignorrance or lack of knowledge. I was always asking myself how do we determin the age of universe. I got this as an answer:

Astronomers estimate that the Big Bang occurred between 10 and 20 billion years ago. They estimate the age of the Universe in two ways: (a) by looking for the oldest stars; and (b) by measuring the rate of expansion of the Universe and extrapolating back to the Big Bang.

Now, my questions are:

How do we determin which one is the oldest star when our sight is still very limited?

How do we mesasure the rate of expansion of the Universe if we cannot determin the pinpoint from where the expansion begun and how can we be sure that the rate of expansion is even across the universe?

This I could never understand. If side a and b are expanding at the same rate but c and d are expanding at different rates, and without knowing where the center of the expension is  then how can we know the even aproximate age not to mention to give a more or less solid number?

Hope someone can explain in simple words so that I could understand. Tx.

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Posted (IP: Staff) ·
28 minutes ago, odas said:

I do have a question or two,

By one of life's little coincidence NASA released a video today which may answer some of your questions (I haven't had a chance to watch it yet myself).

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1 hour ago, Abramelin said:

I'll sleep a lot better now I know this.

..and twice as long.

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1 hour ago, Waspie_Dwarf said:

By one of life's little coincidence NASA released a video today which may answer some of your questions (I haven't had a chance to watch it yet myself).

Thanks W. Will find time to watch it. Hope it will not create more questions on my part.

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2 hours ago, odas said:

How do we mesasure the rate of expansion of the Universe if we cannot determine the pinpoint from where the expansion begun and how can we be sure that the rate of expansion is even across the universe?

This I could never understand.

Hope someone can explain in simple words so that I could understand. Tx.

Hi odas ,   I can’t explain, because I don’t understand either!   But, i’ve been told that the entire universe is THE center.     ..there is no specific ‘spot’ which is it’s center. ! ?   As for expansion.. they say it’s happening EVERYWHERE.   @ every ‘point’.   If so, then it seems to me there would be a CUMULATIVE effect.?    (cu·mu·la·tive   adjective 1:  increasing or increased in quantity, degree, or force by successive additions.)    Which would make it appear as if the rate of expansion (of space?) is increasing … while ,really, it is the Area/(volume?) of space?) which is increasing.?  Either scenario would  appear the same to us. ?  (maybe both are happening? ..increasing area & momentum) !*  .,if the space between here & there is expanding Everywhere ,in between,  expansion would appear to be accelerating!*?  Some say that as space expands, the available  (finite?) energy becomes  less energetic as it is dispersed!!       Oddly , or naturally, enough, the space within our solar system and within our very atoms is expanding…but we don’t notice, because our solar system, and atoms, are bound/held together by local forces ..like gravity & electromagnetism.          (Please read the disclaimer below;)

But, you ask a great question about …”how can we be sure that the rate of expansion is even across the Universe”?    ! ?

Edited by lightly
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It would probably help if astrophysicists could date black holes.

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18 hours ago, lightly said:

Hi odas ,   I can’t explain, because I don’t understand either!   But, i’ve been told that the entire universe is THE center.     ..there is no specific ‘spot’ which is it’s center. ! ?   As for expansion.. they say it’s happening EVERYWHERE.   @ every ‘point’.   If so, then it seems to me there would be a CUMULATIVE effect.?    (cu·mu·la·tive   adjective 1:  increasing or increased in quantity, degree, or force by successive additions.)    Which would make it appear as if the rate of expansion (of space?) is increasing … while ,really, it is the Area/(volume?) of space?) which is increasing.?  Either scenario would  appear the same to us. ?  (maybe both are happening? ..increasing area & momentum) !*  .,if the space between here & there is expanding Everywhere ,in between,  expansion would appear to be accelerating!*?  Some say that as space expands, the available  (finite?) energy becomes  less energetic as it is dispersed!!       Oddly , or naturally, enough, the space within our solar system and within our very atoms is expanding…but we don’t notice, because our solar system, and atoms, are bound/held together by local forces ..like gravity & electromagnetism.          (Please read the disclaimer below;)

But, you ask a great question about …”how can we be sure that the rate of expansion is even across the Universe”?    ! ?

Thank you lightly for the info. There are some other youtube videos that I have found and need to go thru them.

As for the rate, even speed, of expansion I based my question on the variable speed of asteroids. If Asteroids do not move at the same speed in the universe and are depended on the gravity of a sun, planet...then the speed of the universe expansion could be also variable and dependedent on a force of gravity of something else. As far as I know we can measure the age of the Universe by revinding the speed of expansion to the initial big bang, but this only works if the rate of speed is equal to all. So what if it is not?

I will have to make a pause here and look into this more when I find time.

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Have fun @odas,   I’m a beginner too,  It’s amazing isn’t it!*?       I guess they tend to rely on the speed ,and other observations, of light as the measuring stick.?

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