Science, such as cosmology, does include religion, but it is not called this. For example, dark matter and dark energy are inferred from large scale affects we observe within the universe. However, neither dark energy or dark matter have been proven to be real in the lab. Cosmology is still using an invisible and unproven set of godlike forces, that cannot be proven in the lab, to animate the heavens. Atheism conveniently does not call this a form of religion, even though the principles of science specifically require proof in the lab.
If I attributed the same observational movement of the matter of the universe, not to dark matter and dark energy, but to the breath of God, but I could not show God's breath in the lab, atheism would react differently to the exact same scenario of no lab proof. They do not like strange gods before their gods. They will play by dual standards. If this was pure science, the dark energy and dark natter would be expelled, until lab proof appears. But faith in a foreign god makes this hard to do; selective gods.
In terms of Einstein theories of Relativity, this theory has more of a connection to our visual observation field, than to tangible matter. Newton's theory dealt more with tangible matter. Getting hit in the head with an apple is different from observing the apple at the top of the tree that you cannot reach.
Let me give a simple example of the contrast. If you look at a large mass objective such as a star, General relativity; GR, which deals with gravity, has space-time contracted the most in the center of gravity. Time slows the most in the center of gravity. This is basic. If we ignore the matter and draw a space-time grid this is how the math adds up.
On the hand, the core of a star is where solar fusion occurs. This is the place where gravity causes matter to compress, phase change, and vibrate the fastest. It is also where energy emissions have the fastest frequency; gamma rays. The matter and energy in the center, is actually speeding up due to gravity; to faster frequency, even though Einstein GR says times should be slowing in terms of space-time. Time is not coordinating properly between the vibrational nature of matter, and a visual overlay grid model of space-time. They go in opposite directions.
The core of the earth is supposedly made of solid metallic iron. However, the core of the earth is so hot that the iron should be a liquid. The pressure is causing the iron to remain a solid. At the level of distance GR; says distance contraction and Newtonian predict the same thing; denser matter. Newtonian assumptions are better at inferring any detailed analysis of district material phases.
Although both theories have distance going in the same direction, time is going in the opposite for each theory. This implies two independent time vectors. Relativity and Newtonian each uses one time vector. The two time vectors, could have been inferred from Newtonian acceleration, due to gravity, which has dimensions of d/t/t or is one part distance and two parts time. Relativity needs a Newtonian upgrade to get the second time vector. This way science can eliminate some observational faith based gods.