Astronomers have detected the universe’s largest known cosmological supervoid in the Southern constellation of Eridanus. Spanning some 1.8 billion light years !!!!!!!
(1 Light Years ~ 9 Trillion Kilometer)
It might be the single largest structure ever in the universe, and the only sign of it is nothing – just empty space 1.8 billion light years across. That’s 18,000 times larger than our entire galaxy.
the team remains mainly baffled as to why such an extensive void — in which the “density of galaxies is much lower than in the known universe” — could have actually arisen.
“This supervoid is certainly rare,” Greg Aldering, a cosmologist at Lawrence Berkeley National Lab in California, told Forbes. “Underdense by about 30 percent, it’s not completely empty. But what’s rare is the [spatial] extent of this void itself.”
Source : Forbes