Astronomer Reports Rare Case of Gravitational Lensing
Tuesday, June 26, 2012 - 13:01
in Astronomy & Space
You could say that the odds of seeing it were astronomical. Yet there it was, 10 billion light-years from Earth, the most massive galaxy cluster ever seen at such a distance - with a gravity field so strong that it distorted the light of the galaxy behind it in a rare display called gravitational lensing.