Why does outer space appear black despite being filled with countless stars?
Answer
The vast distances between stars dilute the reaching starlight too much to illuminate the emptiness
The immense scale and spatial separation between stars mean that while starlight travels across the cosmos, the light reaching us is too diluted to effectively illuminate the emptiness between the light sources.

Related Questions
What physical process is responsible for the familiar blue color of the daytime sky?Which wavelengths of light are scattered most effectively by atmospheric nitrogen and oxygen molecules?Why do sunrises and sunsets typically display predominantly red and orange hues?If the Earth had no atmosphere, what color would the sky appear even when the sun was shining overhead?What primary phenomenon causes a location to experience night darkness?Why does outer space appear black despite being filled with countless stars?What is a distinguishing auditory characteristic sometimes reported during a momentary daytime blackout?Why does the sky appear blue instead of violet during the day, given that violet light scatters well?What does the localization of the momentary blackout phenomenon suggest about its possible cause?What is the psychological impact of an abrupt, instantaneous drop from full daylight to zero ambient light?