Assuming that there's even 1% as much atmosphere up there, 20km is like 200m, making some very rough assumptions that I'm not sure are substantiated. If you've

Assuming that there's even 1% as much atmosphere up there, 20km is like 200m, making some very rough assumptions that I'm not sure are substantiated. If you've got a big camera, you can make out a huge amount of detail. At 20km, with the advanced technology that you'd assume is on this thing, they'd be able to see a lot.