Final answer:
The Big Bang theory does not prove that our universe is finite. The possibility of an infinite universe still remains.
Step-by-step explanation:
The Big Bang theory states that the universe began with an explosion of space, time, matter, and energy, happening everywhere in the universe. It was not a localized explosion like an exploding superstar. There were no boundaries or a single site where the explosion happened. Therefore, the Big Bang does not prove that our universe is finite. In fact, the universe may be infinite.
Some scientists propose the idea of a multiverse, suggesting that our universe is just one of many universes with different physical laws. This multiverse could be infinite and eternal, generating many separate universes. Therefore, the possibility of an infinite universe remains.