Kathryn Jepsen

An illustration of lots of yellow dots on a light pink background. Some have rainbows or smiley faces on them. One has lines coming out it that make it look star-like. One dot is shiny and red. In the center, there is a white dot. Some glare appears to emanate from the white dot.

Quanta of light called photons are the smallest possible packets of electromagnetic energy. Learn the history behind how scientists came to understand photons — and what these particles have shown us (and might show us) they can do.

Latin America has reached a pivotal moment in experimental particle physics and astrophysics research. Throughout the month of October, Symmetry will highlight important places, explain significant milestones, and introduce you to some of the people who have shaped and are continuing to shape particle physics and astrophysics in Latin America.