A post at Continuing World talks about ep.11 of Planetes:

But, high above in space, all he sees is the Earth, with no borders to speak of.

I call bullshit.

And then there's this:

Even in 2075, where mankind has already built colonies on the moon and Mars, the rich powers hold monopoly over space and its numerous resources.

Despicable. Of course, I'm assuming that the quoted post translates Planetes 11 faithfuly, but from what I saw from the anime before dropping it, it was rolling in that direction. Glad I didn't continue. Unfortunately, I paid for DVD v.1.

UPDATE: Another border, famously visible from space, is the border between Haiti and Dominican Republic.