Some anomalies in the background radiation have been reported which are aligned with the plane of our solar system. These are unexplained by the Copernican principle and suggest that the solar system's alignment is special in relation to the background radiation of the universe. Land and Magueijo in 2005 dubbed this alignment the "axis of evil" owing to the implications for current models of the cosmos, although several later studies have shown systematic errors in the collection of those data and the way they have been processed. Various studies of the CMB anisotropy data either confirm the Copernican principle, model the alignments in a non-homogeneous universe still consistent with the principle, or attempt to explain them as local phenomena. Some of these alternate explanations were discussed by Copi et al., who claimed that data from the Planck satellite could shed significant light on whether the preferred direction and alignments were spurious. Coincidence is a possible explanation. Chief scientist from WMAP, Charles L. Bennett suggested coincidence and human psychology were involved, "I do think there is a bit of a psychological effect, people want to find unusual things."