There appear to be ripple circle patterns of cooler regions in the cosmic microwave background radiation. We don't know what they mean. One theory is they are evidence of a cyclic universe... a previous big crunch before the big bang.

Pictures & videos available on site(s).




Space Circles Are Proof of a Pre-Big Bang Universe?

Here's another article...

What is Cosmic Microwave Background Radiation?


Over billions of years, this primordial radiation was red-shifted so much by universal growth that it's become nothing more than a background echo of microwave noise. But it's there, everywhere, and it can be measured.


Although instruments such as NASA's Wilkinson Microwave Anisotropy Probe (WMAP) have measured slight temperature variations in the CMBR -- known as anisotropies (pictured below) -- revealing startling clues as to the structure, age and history of the Universe, this new controversial discovery suggests the CMBR contains something else.

Cosmic Rebirth Encoded in Background Radiation? : Discovery News