The Universe Within 12.5 Light Years

Tangential comment, but it’s crazy to think about how, when we look up at the stars in the sky, we’re seeing light in wildly varying degrees of age.

For example, when we look at the sun, that’s 8-minutes-old light. When we look at Polaris (the North Star), that light is 447 years old.

When we look at Andromeda?

Yeah, that light is 2.5 million years old.

Light doesn’t age. From its perspective it hit your retina the moment it left the star.

You are saying, from the perspective of light, whether it travels 1 mile or a trillion miles, that journey takes the same amount of time?