Refs generally say that you can exercise enough altitude control to avoid the ground, but if you start strategically choosing air layers to steer yourself, that's traveling.
The vaccine stuff seems pretty simple. But if you take a closer look at the data, it's still simple, but bigger. And slightly blurry. Might need reading glasses.
I mean, it's pretty, but it doesn't really affect us beyond that. Except that half the nights aren't really dark, and once or twice a day it makes the oceans flood the coasts.