New research suggests that the largest magnetic fields in the universe originated through some exotic mechanism that absolutely soaked the early cosmos.
The Hubble Tension is perhaps, one of the most frustratingly unresolved mysteries in cosmology. Here's the problem: when astronomers measure how fast the universe is expanding today using nearby stars, they get one answer. When it's calculated from the afterglow of the Big Bang—the cosmic microwave background—there is a completely different number. The gap between these measurements has persisted for over a decade, surviving countless attempts to explain it away as experimental error. Either the instruments are systematically wrong, or something fundamental about the universe's evolution is missing from our models.
