The Hubble constant is one of the most important numbers in cosmology because it tells us how fast the universe is expanding, which can be used to determine the age of the universe and its history. It ...

Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New ...

The Hubble Space Telescope, for comparison, has a 6.5-foot (2 m) aperture, he said. Even the smallest version of HWO will need a huge rocket to haul it into space. Blue Origin's New Glenn rocket, ...

This number, known as the Hubble constant, is essential for understanding ... Branch," and uses the fact that low-mass stars ...