Searching for Extra Dimensions in the Early Universe

We investigate extra spatial dimensions (D=3+∊) in the early universe using very high resolution molecular rotational spectroscopic data derived from a large molecular cloud containing moderately cold carbon monoxide gas at Z≈6.42. It turns out that the ∊-dependent quantum mechanical wavelength transitions are solvable for a linear molecule and we present the solution here. The CO microwave data allows a very precise determination of =-0.00000657±0.10003032. The probability that ≠0 is one in 7794, only 850 million years (using the standard cosmology) after the Big Bang.