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 ...

Imagine rewinding the clock to the very beginning of the universe. What would you see? Not the glittering galaxies captured ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.

Or, more precisely, astronomers have used multiple methods of estimating the Hubble constant, and the different methods are converging quite tightly on two different values! This clearly can’t ...

Scientists using the James Webb and Hubble space telescopes have confirmed one of the biggest head-scratchers in modern ...

The clearest and most precise images yet of the universe’s infancy from the Atacama Cosmology Telescope show the first steps ...

He announced his finding in 1929. The ratio of distance to redshift was 170 kilometers/second per light year of distance, now called Hubble's constant. The numbers were not exactly right ...

Edwin Powell Hubble is renowned for determining that there are other galaxies in the Universe beyond the Milky Way, and for observing that the universe is expanding at a constant rate. Hubble was ...

Edwin Powell Hubble is renowned for determining that there are other galaxies in the Universe beyond the Milky Way, and for observing that the universe is expanding at a constant rate. Hubble was a ...

A new image from the Hubble Space Telescope captures the colorful, wispy clouds near the Tarantula Nebula, which is located about 160,000 light-years from Earth in the Large Magellanic Cloud ...