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Q & A: change in the speed of light

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Most recent answer: 10/22/2007
Q:
Do you think it is possible that light may be slowing down over a period of millions of years? Recently I read an article with a scientist in Australia was working to prove this.
- Siddharth (age 14)
Shanghai American School, Shanghai, China
A:
A change in the speed of light would make the laws of physics more complicated. Most physicsits don't think that it's very likely, but no one knows for sure. Some recent astronomical evidence has been alleged to support the idea that the speed of light is changing, but the evidence so far is very weak.

James

(published on 10/22/2007)

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