Experts suggest that the cooler area could be caused by our universe colliding with another.
If true, this could provide evidence for the multiverse theory.
For years, scientists have been stumped by the Cold Spot, which measures around 1.8 billion light years across.
Measurements of the universe’s background radiation found this spot is colder than its surroundings by around 0.00015 degrees Celsius (0.00027 degrees Fahrenheit).
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