Space 'textures' nearly ruled out in WMap study
Just after the Big Bang, the Universe began to coalesce into the structure we see today, which in some theories would result in knots or "textures".
The warm glow left over from that is now spread across all of space, and is used to test theories of those moments.
But a close study of this glow reported in Physical Review Letters has found no evidence of these textures.
The cosmic microwave background (CMB), as it is known, is just a few degrees above absolute zero, but it is the minute variations in the glow across the sky that has intrigued astrophysicists.