The Nature of Light and Perception of Time

A beam of light experiences no passage of time, which means that photons emitted from distant galaxies, like the Andromeda galaxy, take millions of years to reach Earth, yet for the photons, no time passes during their journey. This concept highlights the peculiarities of how we perceive time and light, as we see these distant objects not as they are now but as they were millions of years ago. This understanding creates a mind-bending perspective on the nature of reality and our position within the universe. The fact that light can travel vast distances without aging underscores the extraordinary science of astrophysics.