same reason you can't see many (if any) from within a city; gets washed out from closer/brighter lights (sunlight reflecting off planet is about 1000x brighter than stars)
Also if in higher altitudes, as there is constant sunlight present without any period of darkness unless eclipsed by moon or something, during sunlight period, there's no star rising or setting.
@TheOneyouwerewarnedabout Yes, we need to discuss because in space, there is no night. For The sun never sets unless sun rays are blocked to the space station or a satellite by a planet or any big rock etc. No night means no stars visible.
