How we calculated the universe's age at 13.75 billion years

The Age of the Universe - Professor Carolin Crawford · 53:55 · Video: Gresham College · Watch at the source

In short: Professor Carolin Crawford explains how modern cosmology moved from simple observation to a massive paradigm shift involving dark energy.

The universe's age was adjusted to 13.75 billion years as scientists examined galaxy and cluster data together with cosmic microwave background patterns.

This precision was made possible by uncovering the unexpected presence of dark energy. This discovery forced a significant shift in our understanding of how the cosmos behaves and evolves.

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