We frequently hear that the universe is expanding and that this expansion is accelerating. However, experts now believe that something inexplicable is slowing the expansion rate. In other words, growth is not occurring as quickly as originally thought. But, before we get into the study itself, here’s a quick primer on what it’s all about. This research focuses on ‘large-scale structures’ in the universe. These are the universe’s largest known structures, consisting of gas and dark matter. The large-scale structures take the form of ‘filaments’ that make up the cosmic web.
This expansion has always acted as a ‘friction’ against the growth of cosmic structures
The large-scale structures can be called ‘pipes’ inside which galaxies travel through space. These pipes, or filaments, as they are actually called, intersect with each other and form the cosmic web. According to the study, these large-scale structures are not developing at the typical rate predicted by the mainstream model of cosmology. Scientists at the University of Michigan conducted the research. According to Minh Nguyen, an astronomer and cosmologist at the university who led the team of scientists, the growth of large-scale structures has been restrained in the contemporary age of the universe. According to Vice News, the study has been published in Physical Review Letters.
“We did not set out to look for evidence of a late-time suppression specifically,” said Nguyen in an email to Motherboard. “Our original intention was to see whether the history of the cosmic background expansion is consistent with the history of cosmic structure growth.” “The universe has always been expanding, and lately the expansion has accelerated,” he continued. “This expansion has always acted as a ‘friction’ against the growth of cosmic structures, while gravity has the opposite effect on growth. Therefore, even within the standard model, we also expect growth to be suppressed.”
