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Home Front: Tech
Universal Constant May Not Be As Constant As Previously Thought
2005-04-12
An international researchers has found evidence that a universal constant in nature which governs the strength of the molecular bonds between atoms - called "alpha" - might have changed over time. The strength of alpha is very important, and life couldn't exist if it was much different from its current value. The team examined the light from distant quasars billions of light-years away, and measured the unique fingerprint of its light being absorbed by clouds of gas. They compared this fingerprint to known values here on Earth to measure the difference...
If it's a contest between a universal constant and an observation, I'd bet on the constant.
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