Tightening Lorentz‑Violation Constraints

A new astrophysical analysis combining very‑high‑energy gamma‑ray arrival data finds no energy‑dependent speed of light and improves limits on Lorentz‑invariance‑violating parameters by roughly an order of magnitude. The null result sharply narrows the parameter space available to quantum‑gravity and Standard‑Model‑Extension proposals that predict tiny photon speed variations. — By excluding a large swath of previously viable theory space, the result focuses future theoretical work and experimental searches, making it a real guide for physics funding, telescope priorities, and public understanding of how speculation meets data.