The Universe Has Changed a Lot in the Last 12 Billion Years

There is evidence that alpha has changed within the range that doesn't wreck the universe. A number of years ago physicist john webb and his colleague, cosmologist john barrow looked into the question. If you want to check whether something has been the same for a long time, you need a sample that's as old as possible. The photons of light that carried his answer had travelled 12 billion light years across the cosmos,. landed on earth in hawaii at the kek observatory that sits on the summit of monacea. But what was most interesting about the light arriving at the khek telescope was the light that didn't arrive. There were gaps in webb's spectrum.