25 years ago, in April 1995, two teams from Fermilab published results that finally showed evidence of the top quark, the heaviest of the quark particles in the Standard Model of particle physics, nearly 20 years after it was first theorised. This image shows the jets produced by the decay of a top quark and anti top quark pair in the CDF at Tevatron at Fermilab. Image courtesy of Fermilab. #Physics