The author of this article asked himself: why is mathematics built on a mythical infinite straight line and plane, and what happens if it is built on a circle and a sphere - the most perfect objects of nature? The author called the resulting theory Objective Mathematics (OM), bearing in mind that this theory operates on natural objects that exist in nature (a circle and a sphere) and does not use the axiomatic approach, in particular the infinite parallel straight lines and planes present in traditional mathematics (TM). The constructs and proofs in this article are first made on a circle (one-dimensional OM), and then the resulting law is generalized to a sphere (two-dimensional OM) and 3-sphere (three-dimensional OM). The results obtained 4 empirical laws and 21 laws. The paper gives definitions of such concepts as: • A harmonic four (quartet) on a circle, • A logical three-dimensional count, • Preliminary mathematics (Premathematics) in OM, • Non-Euclidean geometry in OM, • One-dimensional, two-dimensional, three-dimensional OM, etc. As a result of the analysis, the author concludes that the universe is a three-dimensional sphere, where a ray of light is a large circle of this sphere.