Earthshine from where? That’s still reflected sunlight! Maybe a tiny amount of cityshine, but the light pollution from those same cities will far outshine that.
Like you said, artificial lighting. Technically you’d get some IR from the planet itself which could get converted to visible light but definitely not nearly enough to be noticeable. You’d also probably get about 3 seconds of real reflected sunlight before that also goes away.
Well technically there’d be earth glow so it wouldn’t be totally dark.
Earthshine from where? That’s still reflected sunlight! Maybe a tiny amount of cityshine, but the light pollution from those same cities will far outshine that.
Like you said, artificial lighting. Technically you’d get some IR from the planet itself which could get converted to visible light but definitely not nearly enough to be noticeable. You’d also probably get about 3 seconds of real reflected sunlight before that also goes away.