God can neither deceive nor be deceived that is an essential quality of his nature.
We humans, however, can do both.
Our intellects are limited and our ordinary way of learning about the world around us is by observation, reasoning and deduction. Our ability to accomplish this learning, therefore, is limited by the completeness and accuracy of our observations, our intellectual capacity for reasoning and the accuracy of our deductions. Technology improves the quality of our observations and our ability to manipulate a large quantity of data. Where science usually falls down is in the accuracy of deductions made upon all this data.
My initial question was “what is all this cosmology you have been studying?” do you mean you are taking college science courses, or do you mean you are pursuing some other non-scientific course of study?
There is no conflict between science and religion–read Fides et Ratio, the great papal encyclical on that topic. But there is a limit, based on human limitations, to what science can observe and deduce about the natural world, the cosmos.
What are these so-called cosmological theories, who is stating them, upon what authority, why are you taking the course, and if, as it sounds, you are a beginning in this field of study, is it not much more likely that you have a vast deal more to learn about the topic, and that the more you learn the more you will understand?