Question

Which statement best describes how light travels?

Light, in a vacuum, travels at the same speed even if the light source is moving.
Light given off from a moving source will travel faster in a vacuum.
Light given off from a moving source will travel faster in air.
Light, in a vacuum, travels slower if the light source is moving.

Answer 1

The first one is the answer

Answer 2

I believe it's the first one.