Knowing the Hubble Constant , if it is indeed constant, would allow one to calculate the age of the universe. But the value of the Hubble Constant is still being debated. The values accepted today range from 50 km/sec/Mpc to 100 km/sec/Mpc, with 72 being the most widely accepted value. Wendy Freedman of the Carnegie Observatories has come up with a value of 71 km/sec/Mpc for H 0 . Here is a lab excercise that, in a normal year, we might do so that we could calculate our own value for the Hubble Constant. Let’s take a look at it as a class and see how that might be done. Looking at nearby objects will give one value for H 0 . But what may happen in the future? Much depends on whether the universe is open, closed or flat. And that depends on the density of matter in the universe.