Could Galileo have worked out the principles of the modern theory of relativity? Could he, even in the mid-seventeenth century, have derived the Lorentz transformations, the existence of a ...

As Dirac pointed out, the principle of relativity demands that the perfect vacuum be isotropic in the sense of Lorentz, with all directions within the lightcone of any point being equivalent.

Researchers at the Large Hadron Collider tested whether top quarks, the most massive known elementary particles, comply with ...

Scientists used the most massive fundamental particles to break special relativity, but even that didn’t work.

For over a century, quantum mechanics and Einstein’s general relativity have stood as the cornerstones of modern physics, yet ...

Einstein's special relativity, established in 1905, unified space and time into a four-dimensional continuum. It relies on two core principles: Galileo's relativity and the constancy of light's speed.