Does the light travel to infinity or has to disappear somewhere?
Yes, light will travel infinitely in a direction, in a vacuum as long as nothing impedes its path. This is possible because light is a dual-nature phenomena, consisting of both particle-like and wave-like characteristics. Light, and all other electromagnetic sources of energy travel at the same speed, apprx. 186,000 miles per second, regardless of whether you are moving away from the source or toward it! Light is just one part of a grand manifestation of an infinite, unseen, wholly connected web-like phenomena; and when finite human beings try to measure such a thing beyond our ken, we can only “understand” or “be conscious” of bits and pieces (particles) of this information. Hence, light to us, when measured, appears as individual photons. So, to answer your question how something can keep the same speed forever.. Light can travel as at same speed forever because light does not travel in “space” as we conceive it. In fact it does not travel (move from point a to point b) at all. Think
