It's not fair to criticize you for believing such things, since the secular media and educational establishment try to brainwash people into believing that prior to the "Enlightenment" men knew nothing about the universe. But such was not the case.
Try reading St. Augustine, the greatest of all the Church fathers, and the greatest mind of antiquity. He took exception to the pagan philosophers who believed that the universe was infinite in time and space. He demonstrated that the universe might be unimaginably vast, but it had a definite starting point in time and a definite limit in space.
The so-called "enlightenment" philosophers and scientists believed the Aristotelian view. It took Einstein to demonstrate that Augustine (in the year 400) was right, and the modern scientists of the 19th century were wrong.