Ruh Roh. Universe may not be what we thought it was.
Astronomers have discovered something that should not be there. It is an arc of light. The arc is the effect of gravitational lensing which happened as light passed by a massive galaxy about 10 billion years ago in space-time. In other words, in this universe, but very far away and a very long time ago, when our universe was a mere toddler. The galaxy that supplies the light is even farther away.
Phil Plait Mark Brodwin El Gordo University Of Missouri National Optical Astronomy Observatory Deep Wide Field Array For Research
Source: scienceblogs.com