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Did the photon that was generated by the sun thousands of years ago "know" it was going to end up in a drop of dew when it first showed up? I don't know how the speed of light works.

ok you actually chose a very complex an unintuitive quirk of relativity. because photons do not a have a frame of reference, there is no way for them to be at rest, because light always, always, travels at c, no matter the frame of reference

photons essentially do not exist temporally, because it travels at c, time dilation is infinite. it literally does not experience time. it being massless really makes this confusing. so, essentially, the moment the photon was created and when it got to you, are the same, for the photon

The sun came out after the rain and I wanted to take some shots

please release it I use that for warmth and to see things

Thats a whole ass galaxy