Feynman diagrams keep track of what might happen by stringing together lines representing particles’ trajectories through space-time.

(via Minute Physics) This video is chapter 2 in my series on special relativity, and it covers spacetime diagrams, rotational and translational symmetry of both time and space, how certain ...

Feynman diagrams look to be pictures of processes that happen in space and time, and in a sense they are, but they should not be interpreted too literally. What they show are not rigid geometric ...

Richard Feynman's famous diagrams embody a deep shift in thinking about how the universe is put together.

With that in mind, Monika Schleier-Smith (pictured above), a physicist at Stanford University in California, is trying to create space-time from scratch.

Physics What is space-time? The true origins of the fabric of reality A bold new perspective suggests space-time isn’t a fundamental entity but emerges from quantum entanglement, says physicist ...

Why so many “elementary” particles? Why four forces? How do dark matter, dark energy, gravity and space-time fit in? Answering these questions is the work of elementary particle physics.

Nima Arkani-Hamed is a past recipient of the $3 million Breakthrough Prize in Fundamental Physics.