## Faster than Light?

Light travels $\num{299792458}$ meters every second. Since 1905 — the year special relativity gelled to a cohesive theory — this has been considered the Universe's ultimate speed limit. No particle can travel faster and only massless particles (like photons and gluons) can achieve it. The light speed limit revolutionized how we think about space and time, and underpins much of our modern understanding of physics.