By the beginning of the 20th century, several hypotheses were being proposed, suggesting a paradigm shift in our understanding of the universe. However, the clinching evidence was provided by experimental measurements of the position of a star which was directly behind our sun. Which of the following inference(s) may be drawn from the above passage?

(I) Our understanding of the universe changes based on the positions of stars
(II) Paradigm shifts usually occur at the beginning of centuries
(III) Stars are important objects in the universe
(IV) Experimental evidence was important in confirming this paradigm shift