GoKawiilNew model links dark energy and dark matter to a shared 'dark dimension'
Researchers led by Teixeira, building on Khoury and Vafa's string theory work, propose that dark energy and dark matter interact and share a common origin tied to an extra 'dark dimension' far larger than other theorized hidden dimensions. In this framework, massive 'dark gravitons' leaking into this dimension could explain why the universe's measured expansion rate differs by about 9 percent depending on when it's measured, an anomaly known as the Hubble tension.