Einstein’s theory of general relativity explains the solar system very well, but as scientists learned more about the universe beyond, big holes in our understanding began to emerge. Two of these are dark matter, one of the basic ingredients of the universe; and dark energy, the mysterious force that’s making the universe expand faster over time.
Scientists have proposed all kinds of theories to explain dark matter and dark energy, and “a lot of alternate theories to general relativity start with adding an extra dimension,” said graduate student Maya Fishbach, a coauthor on the paper. One theory is that over long distances, gravity would “leak” into the additional dimensions. This would cause gravity to appear weaker, and could account for the inconsistencies….
University of Chicago astronomers found no evidence for extra spatial dimensions to the universe based on the gravitational wave data.
I’m sure we’re all sorry to hear that.