One of the most exciting prospects in physics has been discovering that fundamental constants are not actually constant at all. When I first started writing, physicists and astronomers were just ...

A discrepancy between different measurements of the Hubble constant makes scientists question whether something is amiss in our understanding of the universe. Few numbers have gotten under astronomers ...

Throughout the universe, there are several underlying principles that we consider to be constants; for example, the speed of light in a vacuum. So many different aspects of our understanding of the ...

Early arrivals: the first four images of the gravitationally lensed supernova are shown in yellow. (Courtesy: NASA/ESA/JHU/UCLA/UC Berkeley/STScI) A study of how light from a distant supernova was ...

Researchers at the Kastler Brossel Laboratory in Paris have made the most precise measurement of one of the fundamental constants, called the fine-structure constant, providing physicists with a vital ...

Mathematicians attended Roger Apéry’s lecture at a French National Center for Scientific Research conference in June 1978 with a great deal of skepticism. The presentation was entitled “On the ...