Are We Correct? Calculating the Age of the Universe

  • Thread starter Thread starter Hyperspace2
  • Start date Start date
AI Thread Summary
The discussion centers on the complexities of calculating the age of the universe, with concerns about the effects of motion and time dilation due to the universe's expansion. It highlights that the current age estimation relies on the lambda-CDM model and data from the cosmic microwave background radiation, yielding an approximate age of 13.7 billion years. Participants express skepticism about the accuracy of this model, suggesting that our understanding may be limited by our observational perspective. There is a debate about whether leaving the solar system is necessary for a better understanding of the universe, with some arguing that advanced telescopes already provide significant insights. Ultimately, while acknowledging potential flaws in the model, there is a consensus that it remains the best framework we have for understanding cosmic age.
Hyperspace2
Messages
84
Reaction score
1
We calculated the age of universe. But we may be wrong for following reason I have supposed.


1) Earth is moving, solar system is moving,galaxies are moving. So i think our time system is getting something complexed. By big bang, the galaxies are accelerating, we are in same accelaerating galaxies. Accelerating frames are equivalent to the frames located in gravitaitonal field. So there is time dialtion. Also I suppose the expansion of universe is
not absolutely accelerative, it is non uniform.
And sow how come we think our meeasurement is going to be true because our time measuring system is accelerating or atleast nonuniform of (complex ,it is geeting on my head)

So at least n conclusion, I want to say our measurement of universe age would be correctr if we were extending at uniform motion(velocity)
 
Astronomy news on Phys.org
Hyperspace2 said:
We calculated the age of universe. But we may be wrong for following reason I have supposed.


1) Earth is moving, solar system is moving,galaxies are moving. So i think our time system is getting something complexed. By big bang, the galaxies are accelerating, we are in same accelaerating galaxies. Accelerating frames are equivalent to the frames located in gravitaitonal field. So there is time dialtion. Also I suppose the expansion of universe is
not absolutely accelerative, it is non uniform.
And sow how come we think our meeasurement is going to be true because our time measuring system is accelerating or atleast nonuniform of (complex ,it is geeting on my head)

So at least n conclusion, I want to say our measurement of universe age would be correctr if we were extending at uniform motion(velocity)

I'm not sure if you understand how the age of the universe is determined. The age of the universe is model dependent and related to the Hubble constant, currently the best model we have for the universe is the lambda-cdm model. This model, given the physical baryon density, physical dark matter density, dark energy density, scalar spectral index, curvature fluctuation amplitude and reionization optical depth, allows you to extract the Hubble constant, which tells us the age of the universe.

It describes the metric expansion of space and all of the relevant information can be extracted from the CMB, cosmic microwave background radiation. The WMAP satellite, which just recently concluded data collection, has obtained a truly remarkable fit of the data, giving an age of the universe of roughly 13.7Gy.

But if you feel the astrophysicists involved didn't properly analyze the data to obtain the actual parameters, feel free to read the paper and write a paper criticizing the analysis.

http://iopscience.iop.org/0067-0049/180/2/306

I feel xkcd/675 might be appropriate.
 
currently the best model we have for the universe is the lambda-cdm model

It is still however just a model. It may be the best we have but I just can't help but feel we are looking out through such a small 'window' and claiming that the backyard is the entire world. Until we are able to leave the solar system and go into real space will we have any chance of knowing exactly what is going on out there.
 
Blenton said:
It is still however just a model. It may be the best we have but I just can't help but feel we are looking out through such a small 'window' and claiming that the backyard is the entire world. Until we are able to leave the solar system and go into real space will we have any chance of knowing exactly what is going on out there.

I'm not sure what else we could have if not a model. If we go out into deep space we'll still only have models, it's kinda how science operates.

And while yes, I don't doubt there may be flaws in the λCDM model, I sort of subscribe to Asimov's "Realtivity of Wrong".

http://chem.tufts.edu/AnswersInScience/RelativityofWrong.htm

Yes, we may be wrong, but I still think that given how well the data conforms, we're not colossally wrong.
 
Blenton said:
It is still however just a model. It may be the best we have but I just can't help but feel we are looking out through such a small 'window' and claiming that the backyard is the entire world. Until we are able to leave the solar system and go into real space will we have any chance of knowing exactly what is going on out there.

Well yes, we will have a chance of knowing what's going on, because we have telescopes that can see outside of our solar system (and outside of our galaxy). Why would you think that physically leaving the solar system is necessary?
 
Is a homemade radio telescope realistic? There seems to be a confluence of multiple technologies that makes the situation better than when I was a wee lad: software-defined radio (SDR), the easy availability of satellite dishes, surveillance drives, and fast CPUs. Let's take a step back - it is trivial to see the sun in radio. An old analog TV, a set of "rabbit ears" antenna, and you're good to go. Point the antenna at the sun (i.e. the ears are perpendicular to it) and there is...
This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed). n.b. I start this...

Similar threads

Replies
5
Views
259
Replies
11
Views
5K
Replies
11
Views
3K
Replies
7
Views
3K
Replies
8
Views
4K
Back
Top