Don't forget that satellites in polar orbits don't always cover everything since their orbits can still tend to sync up to the earth's orbit in such a way to le

Don't forget that satellites in polar orbits don't always cover everything since their orbits can still tend to sync up to the earth's orbit in such a way to leave regular tiny gaps at certain latitudes, hence one of the needs for aerial imagery. If one of the gaps of your favorite imaging satellite happens to line up with a no-fly zone, then you can end up with artifacts such as this