Cosmic Microwave Background anomalies

Cosmic Microwave Background anomalies

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Credit: ESA Planck Collaboration/SCIENCE PHOTO LIBRARY

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Caption: Cosmic Microwave Background anomalies. Planck space telescope image of the cosmic microwave background (CMB), showing two anomalous features. CMB is the relic radiation left over from the Big Bang. It permeates the whole Universe in all directions. One anomaly seen here is an asymmetry in the average temperatures on opposite hemispheres of the sky (curved line), with slightly higher average temperatures in the southern ecliptic hemisphere and slightly lower average temperatures in the northern ecliptic hemisphere. This runs counter to the prediction made by the standard model that the Universe should be broadly similar in any direction we look. There is also a cold spot that extends over a patch of sky that is much larger than expected (circled). In this

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