Age of the universe

  • Thread starter radius
  • Start date
  • #1
radius
10
0
Please can somebody explain how the age of the universe can be determined using Hubbles Constant?
If the constant is taken as 10km/s (just for the sake of easiness), how can this be figured out using calculations?

I appreciate any help!:smile:
 

Answers and Replies

  • #2
meteor
937
0
the current value of Hubble constant is 71km/s/Mpc,now if you want to calculate the Hubble time, that is the time that have passed since Big bang, you do:
T=1012/H
where H is the Hubble constant, the result gives the Hubble time in years. If I put 71 in H, if gives 14 billion of years
From the formula you can see that the Hubble constant diminish in value with time, as the Hubble time augments
 
Last edited:
  • #3
Kannan Kailas
4
0
From the center of universe when you look the outer most particle the velocity will be

v=H*X ---- X - Current radius of universe.

So the time of that particle to reach there(age of universe) is

X/V

Which is 1/H

That's it.. Age of universe is Inverse Of H..
This is the most silliest way of explaining it..
 

Suggested for: Age of the universe

Replies
1
Views
321
  • Last Post
Replies
2
Views
262
  • Last Post
Replies
10
Views
493
Replies
24
Views
211
  • Last Post
Replies
13
Views
926
Replies
6
Views
935
Replies
57
Views
2K
  • Last Post
2
Replies
41
Views
3K
  • Last Post
Replies
5
Views
555
Replies
30
Views
1K
Top