Just the light contrast. Stars are not as bright as the light from the sun reflecting off the Earth and the Moon. If they adjusted the exposure enough to see the stars, the Earth and Moon would look blindingly bright in comparison.
It truly needs to be very dark for stars to be easily visible, to the extent that the mere lights from a nearby city shining through the atmosphere are enough to render them invisible on a clear night.
Just the light contrast. Stars are not as bright as the light from the sun reflecting off the Earth and the Moon. If they adjusted the exposure enough to see the stars, the Earth and Moon would look blindingly bright in comparison.
It truly needs to be very dark for stars to be easily visible, to the extent that the mere lights from a nearby city shining through the atmosphere are enough to render them invisible on a clear night.
That was quite qiick and well worded. Thank you!