The term was coined by the writer Frank White after he noticed that nearly every returning astronaut described the same shift. Borders disappear. The atmosphere reads as a line you could rub out with a thumb. The planet stops being a map and becomes a single living thing you happen to be standing on.
We cannot promise you will feel it. We can promise the conditions are exact: a clear cupola, ninety-two minutes per orbit, and no checklist standing between you and the window for the parts of the flight that are yours to keep.
92
minutes per revolution. One full day and night of the planet in the time it takes to watch a film.
Sunrises witnessed per day16
Atmosphere thickness, to scale1.6%
Returning crew who book again71%