Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight Center. Credit: NASA's Goddard Space Flight Center Producer & Director: James ...

Using gravitational waves as a measure of the universe's rate of expansion could solve the biggest headache in physics, the so-called "Hubble tension." ...

Astronomers have long known the universe is expanding—but exactly how fast remains one of the biggest mysteries in cosmology.

NASA’s James Webb Space Telescope has confirmed the existence of a bright galaxy that formed just 280 million years after the big bang, pushing observations deeper into the universe’s earliest period ...

Scientific advancements have made it possible to peek into a faraway galaxy that has big implications.

The Universe is continually expanding, and scientists measure its expansion rate, the Hubble Constant, using two main methods: electromagnetic methods (using light from stars, galaxies, or supernovae) ...