Sky map. (IMAGE) Moscow Institute of Physics and Technology Caption The darker the place is, the greater the probability for neutrinos to come from it in a given direction is. Quasars are shown with green circles. It is seen that quasars are mainly concentrated in dark regions. Credit The Astrophysical Journal Usage Restrictions With a credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.