A physical object, such as a person or a spacecraft, could theoretically make it through a
wormhole in the center of a black hole, and perhaps even access another universe on the
other side, physicists have suggested. In what appears to be the logical extension of the
Interstellar plot in which astronauts try to chase another universe after the catastrophic
effects of climate change destroy Earth - physicists have modeled what would happen to a
chair, a scientist and a vehicle spatial, if each ended up in the spherical wormhole of a
black hole.
"What we did was to reconsider a fundamental question about the relationship between
gravity and the underlying structure of space-time. In practical terms, we dropped a
hypothesis that takes general relativity into consideration, but there is no reason a
priori to support it in the extensions of this theory. ”said one of the members, Diego
Rubiera-Garcia of the University of Lisbon in Portugal.
So, let's take a step back and analyze some basics. According to Einstein's theory of
general relativity, there is a singularity at the center of a black hole - the point where
the forces of gravity are at their maximum intensity, and time and space actually end. If
an object approaches the event horizon, it would be crushed in one direction and stretched
in another, thanks to the extreme gravity forces of the tide that play inside a black hole. If the object remains
intact long enough to reach the center of a black hole, it will be infinitely long and thin: in practice, it has been
spaghettified beyond recognition. Physicists have been playing for years with the hypothesis of a singularity in
the center of a black hole, because until we can actually prove that it exists, there may be many possibilities that
still work - in theory.
Earlier this year, physicists from the University of Cambridge in the United Kingdom argued
that there is no reason why a singularity should necessarily be inside a black hole. They
suggest that in a universe with five or more dimensions - which for us is not out of the
question - a "nude" may exist individually, which is not delimited by a horizon of events.
Of course, that would mean big and huge things for our current understanding of how the
laws of physics govern our Universe, because basically it needs Einstein's theory of general
relativity to be wrong.