Short Note on the Contingent Universe

I believe that the universe is contingent. One thing you need to ask yourself is whether the universe necessarily exists. Is its non-existence a logical possibility? Is it possible that the cosmos did not exist at one time? If the answer is "yes" then the universe is not metaphysically necessary, but it is contingent. So then, one could reason:

1) If it is possible that the universe did not exist at one time, then the universe is contingent. (If p, then q)
2) It is possible that the universe did not exist at one time. (p)
3) Therefore, the universe is contingent. (therefore, q)

This argument is logically valid.