In a recent paper [1], the author shows that in spacetime physics, the Selleri transformations (STs) are viable alternatives ...

A photon emitted from a star a billion light-years away arrives at a telescope having experienced no time whatsoever. Not ...

The Sagnac effect, first observed over a century ago, remains central to our understanding of relativistic kinematics and the operational definitions of simultaneity. Fundamentally, this effect arises ...

The universe comes with a built‑in speed cap, a hard limit that shapes everything from how stars shine to how cause and effect unfold. That limit is usually described as the speed of light, yet the ...