It is going to answer for the questions like how was the universe created?, how is a particle acquire mass. There are so many theory in answering these questions. Still there is no confirmation in correct answer.
What is Hadron Collider
The Large Hadron Collider (LHC) is the world's largest and highest-energy particle accelerator complex, intended to collide opposing beams of protons (one type of hadron) charged with high energy. Its main purpose is to explore the validity and limitations of the Standard Model, the current theoretical picture for particle physics. It is theorized that the collider will confirm the existence of the Higgs boson, the observation of which could confirm the predictions and missing links in the Standard Model, and could explain how other elementary particles acquire properties such as mass. Source1
The $9 billion LHC project, which sits astride the Franco-Swiss border, operates a tunnel buried 50 meters to 150 meters below the ground. The tunnel, or tube, is designed to facilitate and control a head-on collision between two beams of the same kind of particles -- either protons or ions. Traveling through a vacuum comparable to outer space, the beams are guided around the tube by more than 1,000 superconducting magnets.
Rumors about LHC
While scientists are using the collider to find an answer to how the universe was created, there have been increasing rumors circulating around the Internet that the experiments will destroy the Earth and possibly the entire galaxy. People have been fearful that when the particles collide at high energy, they will create a black hole that will suck everything and everyone into it.