Eli5. How its possible for the light to travel constantly with out stop slowing down from the most old galaxies?
In: Physics
Essentially, the universe squeezes the photon to stay at full velocity at all times. It doesnt slow down because the rules say it cant exist otherwise.
Photons are not ‘propelled’, they go one speed and one speed only, otherwise they dont exist.
Realistically, everything in the universe wants to go *c*, unless mass is imparted to the object/particle.
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