We confront the recent proposal of Emerging Brane Inflation with WMAP3+SDSS , finding a scalar spectral index of n _ { s } = 0.9659 ^ { +0.0049 } _ { -0.0052 } in excellent agreement with observations .
The proposal incorporates a preceding phase of isotropic , non accelerated expansion in all dimensions , providing suitable initial conditions for inflation .
Additional observational constraints on the parameters of the model provide an estimate of the string scale .

A graceful exit to inflation and stabilization of extra dimensions is achieved via a string gas .
The resulting pre-heating phase shows some novel features due to a redshifting potential , comparable to effects due to the expansion of the universe itself .
However , the model at hand suffers from either a potential over-production of relics after inflation or insufficient stabilization at late times .