The ambitious Large Hadron Collider (LHC) experiment of the scientists at Europe’s particle physics research centre CERN to study ‘Big Bang theory’ was restarted on Sunday after two-year refit.

The re-operationalization of LHC has once again embarked a new bid to find answers to some of the interesting mysteries of the universe and explore the ‘dark matter’.

The LHC machine was shut down for two years for undergoing a refit.

According to the researchers, the success of the second run completely depends upon lying in breaking out of the ‘Standard Model’ of the working of the universe at the elementary particles level and into “New Physics”.

That also includes exploring for the dark matter that constitutes approximately 96 percent of the components of the universe but can only be spotted by its influence on visible matter such as planets and galaxies.

The astronomers and space scientists are preparing for particle-smashing collisions likely to begin in June, though any new discoveries made are not expected to emerge until middle of 2016.

The overhaul included new magnets, which is much higher voltages and energy beams and an entire check of all wiring around the underground 27-kilometer (17-mile) tunnel of the Large Hadron Collider and its four key detectors and multiple magnets.

Elaborating upon the research organisation’s live blog for the LHC restart, CERN Director General Rolf Heuer, said, “It’s fantastic to see it going so well after two years and such a major overhaul.”

During the last run, between 2010 and 2013, the scientists kept a track record of the Higgs boson particle after several years of hunt in the recorded debris from the collisions of particle at CERN as well as in other smaller colliders.

In two months, the European research center will commence the smashing of particles into each other in the Large Hadron Collider with about two times the energy than that of the first run that occurred between 2010 and 2013, and as before at close to the speed of light.