reading this I was wondering about this.

My sort of childlike mental model of satelite imagery of the planet is that we've "covered" everything but does anyone know at what frequency we do get new satelite imagery for places like the antarctic (or, say, the dead middle of the atlantic ocean?)

I imagine that satelite imagery is a bit needs based but maybe every square meter of the earth is captured at least once a couple of months

(Not the same thing but am reminded of how despite the importance of the internet and undersea cables for fixing things, there are _very very few_ boats that can actually repair them. Maybe there aren't that many satellites pointing at some parts of the globe)

Well, they often have pre-discoveries for astronomical stuff. Where they find whatever they just discovered already being on old photographs. Why would satellite pictures be any different?

Such a search could still be run to predict new islands before they are discovered in the same way?