I am guessing that you mean outside of the material world – the universe of matter, energy, space, and time.
Science is our effort to understand the material world. It is a search for truth at that level. There’s nothing wrong with that, but it is incorrect to say that the domain of science, namely, the material world, is all there is. That’s materialism. Science can’t prove or disprove that proposition.
Reason, however, perhaps can. St. Thomas Aquinas, for example, used a kind of logic to prove that God exists, and to gain many other insights.
It may be possible for you to reconcile faith and science. I am a scientist and I think a lot about these sorts of things. Science both challenges and strengthens my faith. My advice to you is to keep searching and thinking, and don’t settle for materialism. The atheist looks at the world and says that science explains mind and love. The believer looks at the world, and science, and says “How great is our God, who can form mindful and loving beings out of minerals, water, and air!”
It’s not always easy. They say faith is a gift from God. You can’t construct faith solely from reason. Science informs us that when we die, our brain chemistry stops. More accurately, it returns to thermal, chemical, and electrical equilibrium. The material “self” associated with brain function is utterly destroyed. If anything of our self remains – let’s call it our soul – it is unobservable and totally outside the domain of science.
Other discussions here at CAF have asked about the nature of the soul after the death of the body. Does the soul retain the memories and thoughts and feelings that were associated with brain function? If it does, it is beyond the natural world. Science has no way to observe or explain it.
One may still have faith. It might be a desperate faith, or it might be a sure faith, or a little bit of both. I believe that God created this awesome, amazing universe, and with it created me. Did he create me to live in the flesh, and then die forever? If that is God’s entire plan, I would be disappointed, but frankly there’s not a lot I could do about it. However, I believe that a God who can create this universe can do a lot more. If he intends for me to exist after this life, he can make it happen, no difficulty for him, and it will be even more awesome than this already awesome universe. So, in summary, I have faith, not without some doubt or worry, I have much love for our God who holds us in existence, and I have big hopes.
What do you believe?