Astronomers have discovered what they say is the largest known structure in the universe: an incredibly big hole. The “supervoid”, as it is known, is a spherical blob 1.8 billion light years across that is distinguished by its unusual emptiness.

http://ift.tt/1bllMsq

Submitted April 21, 2015 at 01:47AM by madam1 http://ift.tt/1DFgxwH