A new study suggests that a mysterious "cold spot" in space could be proof of parallel universes with alternate realities.
The cold spot, which measures at around 1.8 billion light years across, has been stumping scientists for years now, the Daily Mail reported. Measurements of the universe's background radiation showed the spot is colder than its surroundings by 0.00027 degrees Fahrenheit.
Previous research suggested the spot was colder because it contained as many as 10,000 less galaxies than other regions in space.
But a new study revealed that this "massive supervoid" is not possible, and that the cold spot cannot be explained by any "missing" matter. The discovery opens the door to other explanations, one being proof of the "multiverse."
"We can't entirely rule out that the Spot is caused by an unlikely fluctuation explained by the standard model [of particle physics]," study coauthor Professor Tom Shanks, who is an astronomer at Durham University, told the Daily Mail. "But if that isn't the answer, then there are more exotic explanations.
"Perhaps the most exciting of these is that the Cold Spot was caused by a collision between our universe and another bubble universe.
"If further, more detailed, analysis … proves this to be the case then the Cold Spot might be taken as the first evidence for the multiverse."
If this is the case, the cold spot could prove that space contains an infinite number of parallel universes with an infinite number of realities.
"These uncountable realms sit side by side in higher dimensions that our senses are incapable of perceiving directly," astronomy expert Dr. Stuart Clarke wrote for The Guardian. "Each alternate universe carries its own different version of reality.
"There will be one where you wrote this column and I read it ... even a really weird one in which [President Donald Trump] uses twitter to spread nothing but amusing cat videos."
While there is plenty more research to be done, some experts remain skeptical. Ironically, one of the most vocal opponents against the multiverse theory is one of its creators.
Paul Steinhardt of Princeton University helped develop the theory of inflation, which examines the origin of our universe. While it also struggles to explain the cold spot, the theory does suggest that once a universe starts to form, it triggers more to be born ad infinitum.
Steinhardt turned on his own theory in 2014.
"Our observable universe would be just one possibility out of a continuous spectrum of outcomes," he told Scientific American magazine. "So, we have not explained any feature of the universe by introducing inflation after all. We have just shifted the problem of the original big bang model (how can we explain our simple universe when there is a nearly infinite variety of possibilities that could emerge from the big bang?) to the inflationary model (how can we explain our simple universe when there is a nearly infinite variety of possibilities that could emerge in a multiverse?).”