While in the lunch room at work, I often look at the paper. The paper one day this week had an article on the farthest object that has yet been observed by astronomers. One of the guys in my group was there and we started to talk about computing the Earth's age and computing the age of the universe. Since I have already covered calculating the age of the Earth in a previous post, I thought it would be worth documenting calculating the age of the universe as well. It is a shorter subject, at least for this level of detail.
The only piece of data needed is Hubble's constant. We can see the linear relationship between the recessional velocity and distance from the chart shown in Figure 1 (Source). Note the linearity of the characteristic.
I show in Figure 2 that the reciprocal of Hubble's constant equals the age of the universe. Figure 2 is a screenshot of my Mathcad worksheet (I like to use Mathcad's unit checking).
Pretty straightforward. I first got interested in the subject while listening to an audio book called "Horizons of Cosmology" by Silk. It is a great listen and worth your time if you are interested in that sort of thing.