light-years

To put that in perspective, that's 1.91 percent of the diameter of entire observable universe. In 1981, while conducting a redshift survey of the distribution of galaxies, astronomers spotted something (or nothing) that they weren't expecting. "[W]e discovered that the redshift distributions in each of the three northern fields showed an identical 6,000 [kilometers per … [Read more...] about Astronomers Found A Massive Void In The Universe 1.8 Billion Light-Years Across