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In a landscape of compactifications with different numbers of macroscopicdimensions, it is possible that our universe has nucleated from a vacuum wheresome of our four large dimensions were compact while other, now compact,directions were macroscopic. From our perspective, this shapeshifting can beperceived as an anisotropic background spacetime. As an example, we present amodel where our universe emerged from a tunneling event which involves thedecompactification of two dimensions compactified on the two-sphere. In thiscase, our universe is of the Kantowski-Sachs type and therefore homogeneous andanisotropic. We study the deviations from statistical isotropy of the CosmicMicrowave Background induced by the anisotropic curvature, with particularattention to the anomalies. The model predicts a quadrupolar power asymmetrywith the same sign and acoustic oscillations as found by WMAP. The amplitude ofthe effect is however too small given the current estimated bound onanisotropic curvature derived from the quadrupole.

Anisotropic Kantowski-Sachs Universe from Gravitational Tunneling and its Observational Signatures