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.

Physicists can't explain the Hubble tension just by changing the expansion rate in the late universe – this whole class of solutions falls short. When you purchase through links on our site, we may ...

Hubble’s observation revealed that the rate at which our universe is expanding is accelerating. As more time passes, the ...

We have known for almost a century that the universe is expanding, but it's been surprisingly hard to nail down the rate of expansion. The availability of the James Webb Space Telescope is finally ...

Recent measurements from JWST have confirmed the validity of the “Hubble tension.” The Hubble tension stems from the fact that measuring the Hubble constant—the rate of the universe’s expansion—two ...

Scientists have struggled for many decades with a cosmological conundrum known as the Hubble tension—a persistent disagreement in how quickly the universe is expanding as inferred from observations ...