I'm not sure why the night-time feed isn't at least picking up lights from cities or oil refinery burns. (Granted, right now it's off the southern coast of Australia...)
Earth is big, most of it is ocean, most of the rest is uninhabited.
Umm any decent camera would pick up at least something, black means they turn off the feed
+ like someone else said 480p is not hd
the stream is gray when they turn off the feed, black is night.