The Hubble Tension: Why the Universe is Breaking Physics

For decades, we thought we had the history of the universe figured out. But a persistent 10% disagreement is threatening to tear up the textbooks. It’s called the Hubble Tension. On one side, we have the "Early Universe" team, using the Cosmic Microwave Background to calculate an expansion rate of 67.4 km/s/Mpc. On the other, we have the "Late Universe" team, using supernovae and Cepheid variables to measure a rate of 73 km/s/Mpc. In this video, we dive into the heart of the controversy: The Cosmic Distance Ladder: How we use stars and supernovae as yardsticks. The Planck Mission: How we use the afterglow of the Big Bang to predict the future. The Gap: Why a 10% difference is a "crisis" when the margin of error is only 1%. The Solutions: From "Early Dark Energy" to modified gravity—what will it take to fix the math? If we can't solve the Hubble Tension, we might have to accept that our fundamental understanding of space and time is missing a massive component. --- Don't forget to LIKE and SUBSCRIBE for more cosmic deep dives!