“Through gaps in the cloud layer she could see the light-but-dark blue of the Terran sky, subtle and full.
It looked like a blue dome flattened at the center, perhaps a few kilometers above the clouds—she reached up for it—although knowing too that it was just a kind of rainbow made it glorious.
A rainbow that was blue everywhere and covered everything. The blue itself was complex, narrow in range but infinite within that range.
It was an intoxicating sight, and you could breathe it—one was always breathing it, you had to. The wind shoved it into you!
Breathe and get drunk, oh my, to be free of all restraint, minimally clothed, lying on the bare surface of a planet, sucking in its atmosphere as if it were an aqua vitae, feeling in your chest how it kept you alive!
No Terran she had ever met properly appreciated their air, or saw their sky for what it was. In fact they very seldom looked at it.”
from 2312 by KSR