The Multiverse, CERN, and Inter-dimensional Portals

One fascinating idea that has come to be a fixture of science
fiction and fantasy is the notion of other universes and realities
other than our own, new worlds existing side by side with us,
bumping up against each other, different from our own, holding
fantastical realms with their own laws of physics, and even
harboring other versions of ourselves. It is a concept that has
been explored in numerous movies and pieces of fiction, yet is
this all mere science fiction or is there something more to it?
In recent years there has been increasing serious consideration
of the idea of parallel universes, that we are but one of many,
possibly infinite worlds, and the discussion has turned more and
more towards the idea of whether travel between these realms is
possible. This notion has unleashed all manner of debate and
conspiracy theories on whether such portals have been opened,
and one place where this has been claimed to have been done
is of course a secret scientific facility located in a remote area
of Switzerland. 
The European Organization for Nuclear Research, commonly
known as CERN, is a research organization made up of 23 member
states that was established in 1954 at Geneva, on the Franco–Swiss
border for the purpose of pursuing research into atomic nuclei and
high-energy physics, mainly the interactions between subatomic
particles and their effects. The name CERN also applies to its
sprawling laboratory, which employs nearly 3,000 scientific,
technical, and administrative staff members, and is the largest
particle physics laboratory in the world. CERN is perhaps most
well-known for its massive Large Hadron Collider (LHC), the
world's largest and highest-energy particle collider, which was
built between 1998 and 2008 in collaboration with hundreds of
countries, universities and laboratories in a groundbreaking
acheivement of science and engineering. While a monumental feat
and huge jump for science, from pretty much since the LHC was
turned on it has proven to be controversial for the general public.
It was widely believed that the particle accelerator would mean the
end of the world by creating a miniature black hole or unravelling
reality somehow, despite assurances from scientists that there was
nothing to worry about, and even when the first particle collisions
were achieved in 2010 without the world ending CERN and its
particle accelerator would go on to generate all manner of conspiracy
theories on secret research and interdimensional portals, somehow
punching through the curtain that seperates realities and even
letting things from the other side bleed through.
The LHC itself is comprised of a vast loop stretching 27 kilometers
(about 17 miles). This loop is more or less used to hurl subatomic
particles at extreme speeds in order to smash them into each other to
test what will happen for the purpose of unlocking some of the
secrets of our universe, including recreating the conditions of the
Big Bang, to find out how our universe was created, and find dark
matter and the so-called God Particle, among others. Perhaps one
of the most famous discoveries linked to the various experiments
at the LHC was the observation of Higgs Boson particles, which give
matter mass and up until then had been purely theoretical. However,
the very presence of such a large and remote scientific facility
located deep underground, its innately somewhat scary-sounding
premise of smashing particles together at the speed of light, and its
being manned by scientists working on strange experiments in
a subterranean tunnel, have perhaps not surprisingly given it a
somewhat ominous reputation, causing quite a bit of concern among
the public and spawning all sorts of wild theories about what is
really going on there in the dark depths of the earth. 
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