A new catalog has been released that provides distances to over 2 million galaxies. This is the largest and most accurate catalog of galaxy distances ever created, and it will help astronomers to better understand the structure and evolution of the universe.

The catalog was created using data from the Sloan Digital Sky Survey (SDSS), which is a massive spectroscopic survey of the sky. The SDSS has collected data on over 3 million galaxies, and the new catalog uses this data to measure the redshifts of these galaxies.

Redshift is a measure of how much the light from a galaxy is shifted towards the red end of the spectrum. This shift is caused by the expansion of the universe, and it can be used to measure the distance to a galaxy.

The new catalog provides distances to galaxies up to 6 billion light-years away. This is a significant improvement over previous catalogs, which only provided distances to galaxies up to about 2 billion light-years away.

The new catalog will be a valuable resource for astronomers who are studying the structure and evolution of the universe. It will also be used to plan future observations of galaxies.

Here are some of the key findings from the new catalog:

* The universe is expanding at a rate of 73.5 kilometers per second per megaparsec. This is slightly faster than the previously accepted value of 70 kilometers per second per megaparsec.

* The universe is about 13.8 billion years old. This is consistent with previous estimates.

* The Milky Way galaxy is located at the center of a large supercluster of galaxies called the Laniakea Supercluster. The Laniakea Supercluster is about 500 million light-years across.

The new catalog is a major breakthrough in our understanding of the universe. It will be used by astronomers for many years to come to study the structure and evolution of the cosmos.