A new, heavy version of a proton discovered at CERN

 In my classes, we do think in terms of protons and neutrons being composed of smaller particles, called quarks. Specifically, protons are two ups and one down, and neutrons are one up and two downs. 

The new particle that's been observed and measured is called a Xi baryon (baryons are particles composed of three quarks), and is two charm quarks and one down. This has a +1 charge like a proton, and is four times more massive. This was done at the CERN lab, which is in Europe between France and Switzerland. 

Goes to show that there are always new discoveries waiting to be made, even with theories like the Standard Model that's been around since the late 1960s. Cool!