The blue region near the center of the image to the left shows a large low-density region of the universe where there is an unusual absence of galaxies, known as the “supervoid”. This low density region is estimated to be about 1.8 billion light-years across. The void was discovered by a team of astronomers led by Istvan Szapudi, who used spacecraft observations and the Pan-STARRS Telescope to make this map. It covers a large area of the sky, about 30° on a side (indicated by the dashed circle)
“The supervoid is possibly the largest individual structure yet discovered by Humanity.” – Istvan Szapudi