Astronomers have made new measurements of the Hubble Constant, a measure of how quickly the Universe is expanding, by combining data from the Hubble Space Telescope and the James Webb Space Telescope.

Planck's constant is one of the fundamental constants that sets up all the "rules" for how things work in our universe. (It’s named after the theoretical physicist Max Planck, who is best known for ...

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 ...