In February 2023, a highly energetic neutrino, 35 times more powerful than any previously detected, was observed by the KM3NeT detector near Sicily. While some scientists suggest it originated from a blazar, others propose it came from an exploding primordial black hole (PBH) on the solar system’s edge. A new theory, published in Physical Review D, posits that this PBH was formed from cosmic strings and existed in a fifth dimension, explaining why no accompanying photons were detected. This fifth dimension, sometimes called a “dark dimension,” could be a result of dark energy and is only penetrable by gravity. The concept aligns with string theory, suggesting a complex universe beyond our perception.
QUESTION: How might the discovery of a fifth dimension change our understanding of the universe and our place within it?
This weird particle may have come from a black hole exploding in another dimension
