|MadSci Network: Astronomy|
Imagine a distant star emitting light. A photon starts out at the surface of this sun and travels ever further from it in a straight line (assuming no gravitational lensing) and eventually reaches my eye. Now imagine all the photons leaving the surface of the sun in an instant as an ever expanding sphere. Since a finite number of photons were emitted and the photons are traveling away from the sun in straight lines, they should get further away from each other - much like two dots on a deflated balloon will move away from each other as the balloon is inflated. This would mean that mean that we don't see many stars because the photons are so far apart from each other that they miss earth completely... I doubt this is actually the case, so please explain where my thought process has led me astray!
Re: How do we see stars if light is emitted in a spherical pattern?
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