The fine-structure constant is a measure of electromagnetism — one of the four fundamental forces in nature; the others are gravity, weak nuclear force and strong nuclear force. In a paper published in the journal Science Advances, a team of researchers reported that four new measurements of light emitted from ULAS J1120+0641, a quasar located approximately 12.9 billion light-years away, reaffirm past studies that have measured tiny variations...
