I was reading a book called "Terrestrial Energy" (book is about energy sources, notably nuclear and how it is better than people give it credit for) and the author cited the speed of light at 187,000mps. Having read countless times that the speed of light is supposed to be 186,000mps, I at first thought it was an error. Then I thought "Awfully big error, must be something to it" so I looked into it more.
I found this website
and saw the same 187,000 mps number. However, the article closes out with
"Today, we have excellent reasons to believe that nothing in the universe can possibly travel faster than 186,000 miles in one second."
That seems conflicting to what information was stated in the paragraph just above. Anyone able to clarify this perplexing issue? textbooks have been stating 186,000mps for decades now. Is this in error?