I was thinking about physics today and there was an idea where if 1 object splits into 2.
And If each object is moving away from each other at the speed of light.
And if just a moment after they split and start rushing away from each other if light/photons comes from each object moving towards each other, then the photons will never meet.
2 beams of light that are trapped a moment away from meeting each other forever. Like a very sad love story :(
I wanted to know if there is a word or phrase that might describe the perpetual idea of trying to meet in the middle or be together, but never being able to succeed.
I thought about the word parallel like parallel lines because those never meet, but the problem is that they are next to each other and in this case I want to describe something where they are going from 2 separate points and try to connect in the middle. I also thought anti-parallel which is closer to what I want but isn't quite right because you still run into the problem of the lines being next to each other.
So I am looking for any word, phrase or fictional character that is popular for a story of something similar.