Where does this come from, and can I check it?

Its 27 kilometre ring sits about 100 metres below the French and Swiss border. The figure is taken from CERN, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a records & extremes fact?

Yes. It sits on the Records & Extremes shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

The Large Hadron Collider is the largest accelerator

Its 27 kilometre ring sits about 100 metres below the French and Swiss border CERN's collider is a ring of superconducting magnets 26.7 kilometres in circumference, buried beneath farmland outside Geneva. Protons are accelerated in two opposite beams and steered by magnets cooled to 1.9 kelvin with liquid helium. The machine confirmed the Higgs boson in 2012 and collides particles at energies of several trillion electron volts. It sits in Mondo's records & extremes collection, one of 200 facts that each trace back to the reference below.

Where this comes from

CERN

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Tags: physics, cern, accelerators

The Large Hadron Collider is the largest accelerator: the short answers

Where does this come from, and can I check it?: Its 27 kilometre ring sits about 100 metres below the French and Swiss border. The figure is taken from CERN, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a records & extremes fact?: Yes. It sits on the Records & Extremes shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.