Fermilab Today
How big are theoretical strings compared to quarks? - Quora
Which is a smaller particle - Quark or Electron? - Quora
Dawn of the quark ages - ScienceDirect
Fundamental Particles | Definition | nuclear-power.com
Physics - Dissecting the Mass of the Proton
Quark - Wikipedia
The Scale of the Universe
1.5: The Smallest Stuff- Particles, Atoms, and Molecules - Physics LibreTexts
Elementary Particles
How CERN's discovery of exotic particles may affect astrophysics
elementary particles
Quark - Wikipedia
particle physics - Are quarks/electrons different sizes (physically/in terms of mass)? - Physics Stack Exchange
Why study particle physics? - A brief introduction
Fermilab Today
Physicists Finally Nail the Proton's Size, and Hope Dies | Quanta Magazine
Ask Ethan: If Matter Is Made Of Point Particles, Why Does Everything Have A Size?
Standard Model - an overview | ScienceDirect Topics
Why Do Matter Particles Come in Threes? A Physics Titan Weighs In. | Quanta Magazine
Study of quark speeds finds a solution for a 35-year physics mystery | MIT News | Massachusetts Institute of Technology
Are quarks or electrons made of even smaller particles? - Quora
Lesson Video: Up Quarks and Down Quarks | Nagwa
NOVA | Teachers | Elegant Universe, The | Student Handout: Sizing Up Protons | PBS
