The folks at CERN have successfully tested the Large Hadron Collider (LHC). They are now ready to move forward on the tests for which the LHC was built.
why is it calleed Laege Hardon Collider?
Large because it is really big. The LHC is a large circular tunnel with a circumference of 27 kilometers (17 miles), buried in the ground under an average of 100 m (328 ft) of dirt and rock.
Hadron is a family of subatomic particles made of quarks and held together by the strong force*. Examples of hadrons are protons and neutrons. As you can guess from the name, the LHC uses mostly protons (with some ions) for its experiments.
Collider because the LHC accelerates protons into two beams travelling in opposite directions and then collides them to see what particles come out.
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