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Scientists Make Largest Quark, Solving A 20-Year Mystery

•, By Douglas Main
Top quarks are the heaviest of subatomic particles, and are prime components of all matter--everything from mayonnaise to your big toe. But while they are in virtually everything, they are impossible to isolate from matter under ordinary circumstances. To study them, you need to "make" them by running particles into each other at ultra-high speeds, billions or trillions of times. 
After working at it for nearly 20 years, scientists at the Tevatron particle accelerator at Fermilab have discovered the last as-yet-unproven way of making this quark--and it only took 500 trillion particle collisions to do it. "It's a very rare process... and it's very exciting" to finally witness it, Fermilab physicist Dmitri Denisov told Popular Science.

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