The current scientific consensus derived from the \LambdaCDM model (Lambda-Cold Dark Matter) and precise measurements of the Cosmic Microwave Background (CMB) by missions like Planck still places the age of the Universe at approximately 13.8 billion years.
However, you are correct that a significant, albeit alternative, cosmological model suggests the age could be closer to 26.7 billion years. 🧐 The Alternative 26.7 Billion Year Model
This hypothesis stems from the work of cosmologists, notably Rajendra Gupta, who proposed the Covarying Coupling Constants and Tired Light (CCC+TL) hybrid model. This model was developed specifically to resolve a tension created by the James Webb Space Telescope (JWST). The JWST Tension
JWST observed galaxies that appear too massive and too mature at surprisingly high redshifts (z \approx 10 to z \approx 14), meaning they formed as early as 300 to 500 million years after the Big Bang. In the 13.8\text{ Gyr} timeline, this simply doesn’t provide enough time for these structures to have accumulated such high stellar mass and metallicity. This is known as the “impossible early galaxy” problem. How CCC+TL Resolves It
The CCC+TL model addresses this by:
* Stretching the Timeline: It proposes the Universe is 26.7\text{ Gyr} old, which gives early galaxies several billion years (e.g., 5.8\text{ Gyr} at z=10) to evolve, making their observed maturity physically plausible.
* Tired Light (TL): It incorporates the idea that photons lose energy as they travel across vast cosmic distances. This energy loss contributes to the observed redshift (the apparent stretching of light), meaning some of the light we see is redder because it is older, not just because the Universe is expanding rapidly.
If the CCC+TL model is supported by future data, it would necessitate a fundamental revision of the \LambdaCDM framework. For instance, the original research claimed it could explain the data without requiring the existence of Dark Matter.
This video explores the specifics of Gupta’s paper and the mathematical foundation of the \text{26.7 Gyr} hypothesis. Gupta’s Paper Says That The Universe Is 26.7 Billion Years Old

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