What if the light of a star is from past?
135951
How many naked-eye stars have 'died' since they emitted the light we are seeing?
82440
As the universe ages, will we see more stars or less?
97818
How do I find a previously discovered system?
150550
Possible colors of fire?
86221
Why do stars flicker?
19829
Is light affected by gravity? Why?
129566
What happens to light in a perfect reflective sphere?
90676
Why do light sources appear as stars sometimes?
57608
Approaching speed of light: why do objects appear further away in front of me?
129737
How do I achieve this kind of light star effect?
64715
How is it possible that we see light from shortly after the big bang?
79051
Object emit light distance
26470
Which past tense of "to light" should I use here?
141546
Time and distance in a photon's frame of reference
133259
Loss in energy by light after reflections
4005
If refraction slows down light, isn't it possible to hold light still?
36202
Particle Color based on where the particle is emitted?