It's Going to Take More Than Early Dark Energy to Resolve the Hubble Tension

Astronomers have measured the Universe's expansion rate and found that various methods don't agree, and their error bars don't overlap. This is called the "Hubble Tension" or the "Crisis in Cosmology." Either the measurements are wrong, or new physics is waiting to be discovered. Cosmologists have proposed a period of rapid expansion early on in the Universe called "Early Dark Energy." Still, a recent paper suggests one rapid expansion event wouldn't explain other observations about the Universe...