  The two fundamental assumptions in cosmology are that the Universe is
statistically homogeneous and isotropic when averaged on large scales. Given
the big implication of these assumptions, there has been a lot of statistical
tests carried out to verify their validity. Since the first high-precision
Cosmic Microwave Background (CMB) data release by the WMAP satellite, many
anomalies that challenges the isotropy assumption, including dipolar power
asymmetry on large angular scales, have been reported. In this talk I will
present a brief summary of the test of cosmic isotropy we carried out in the
latest WMAP and Planck temperature data.
