The universe is liquid
According to the theory proposed (
https://bit.ly/3EZKxbE) by
Italian physicists Stefano Liberati and Luca Macchione,
space-time is not just an abstract frame of reference containing
physical objects such as stars and galaxies. Italian scientists
believe that it is a physical substance, analogous to an ocean
filled with water. According to the theory, just as water is made
up of countless molecules, spacetime is made up of microscopic
particles at a deeper level of reality. In general, the very idea
that space-time behaves like a liquid is the newest - the theory
of superfluid vacuum was proposed more than half a century
ago. But Italian researchers were the first to question the
viscosity of such a liquid.
Liberati and MacKione proposed a solution to the problem -
they developed a theory of superfluid space. According to them,
the universe consists of a superfluid liquid with zero viscosity,
which behaves as a whole. A superfluid liquid is a liquid that
can flow indefinitely without loss of energy. This is not a
fictional concept, such liquids do exist. Superfluidity is the
phase of a substance into which liquids or gases pass when they
cool to temperatures close to absolute zero. In this state, the
atoms lose their individual properties and behave as a single
superatom. The most famous superfluid liquid is helium, but
cooled to only 2 K (Kelvin) or -271.15 Celsius.
Superfluids have several unique properties. They can, for example,
climb the walls of an open vessel and "escape" from it. At the same
time, it is simply impossible to heat them - they transfer heat
perfectly. A superfluid liquid simply evaporates when heated. The
theory visualizes space-time as a superfluid with zero viscosity.
A strange property of such fluids is that they cannot be made to
rotate "in mass", as an ordinary fluid "works" with stirring. They
break up into tiny vortices. In 2014, scientists figured out that
these quantum "tornadoes" in the early universe explain the
origins of galaxies.
