Quarks. Quarks represent the smallest known subatomic particles. These building blocks of matter are considered the new elementary particles, replacing protons, neutrons and electrons as the fundamental particles of the universe.

Is there anything smaller than subatomic particles?

There is currently nothing known that is smaller than a subatomic particle. Even though subatomic particles are the smallest things in existence it...

What is the smallest particle?

Quarks are the smallest particles we have come across in our scientific endeavor. The Discovery of quarks meant that protons and neutrons weren't fundamental anymore. To better understand this, let's peel apart a piece of matter and discover its constituents by removing each layer one by one.