Uploaded April 2026 | Updated September 2026, 3 weeks ago
A widely discussed hypothesis about parallel universes is rooted in the idea that cosmic inflation, the rapid expansion of space that took place in the moments following the Big Bang, did not occur as a single event, but unfolded simultaneously across multiple locations.
As a result of this, distinct universe “bubbles” each began their own expansion independently. During this process, specific forms of matter became confined to particular bubbles, meaning the composition of each bubble could differ significantly from another.
(We have produced a video covering one such study, which proposes the existence of an anti-universe composed entirely of antimatter, where time itself flows in reverse. Watch it here: youtu.be/yJN5IOH6O5w)
Consequently, the fundamental physical laws governing the behavior of matter and energy may vary from one bubble to the next. Although each of these bubble universes is boundless in its own right, they remain entirely isolated from one another. Many physicists consider this framework compelling because it may account for the absence of certain phenomena that current scientific models would predict should exist in our universe.
One example is magnetic monopoles, hypothetical particles carrying only a single magnetic pole, either purely positive or purely negative, with no opposing counterpart. These may well exist, just within a different universe bubble than our own.
A widely discussed hypothesis about parallel universes is rooted in the idea that cosmic inflation, the rapid expansion of space that took place in the moments following the Big Bang, did not occur as a single event, but unfolded simultaneously across multiple locations.
As a result of this, distinct universe “bubbles” each began their own expansion independently. During this process, specific forms of matter became confined to particular bubbles, meaning the composition of each bubble could differ significantly from another.
(We have produced a video covering one such study, which proposes the existence of an anti-universe composed entirely of antimatter, where time itself flows in reverse. Watch it here: youtu.be/yJN5IOH6O5w)
Consequently, the fundamental physical laws governing the behavior of matter and energy may vary from one bubble to the next. Although each of these bubble universes is boundless in its own right, they remain entirely isolated from one another. Many physicists consider this framework compelling because it may account for the absence of certain phenomena that current scientific models would predict should exist in our universe.
One example is magnetic monopoles, hypothetical particles carrying only a single magnetic pole, either purely positive or purely negative, with no opposing counterpart. These may well exist, just within a different universe bubble than our own.
