2 ms·

Is there other things/particles going at the speed of light in a vaccum? If no, why? Whats so special about those photons? Could there be (in the maths at least

Is there other things/particles going at the speed of light in a vaccum? If no, why? Whats so special about those photons? Could there be (in the maths at least) things/particles going at no speed whatever is the referential frame (in other words they are always in your frame like if they were infinitly distant from everything)?

8note 5y ago
Anything massless moves at the speed of causality
- quadcore 5y ago
  I have another question that's burning me. Has velocity always the same magnitude in space-time? Or rather (cause certainly not), can an object "trully" have varied velocity in space time (other than in terms of direction)?