What Counts as Space

The trouble is a line nobody can see. The Kármán line — the internationally recognized boundary of space — sits at 100 kilometers. Branson topped out at 86. The United States, meanwhile, hands astronaut wings to anyone who crosses 80. So depending on which authority you consult, Branson either grazed the edge of the cosmos or fell 14 kilometers short of it, dangling in the awkward nowhere of "very high up."

Here's the thing that should make you laugh, and then make you think. Space doesn't have an edge. There's no membrane up there, no velvet rope, no bouncer. The atmosphere just thins and thins and thins until, some indeterminate number of kilometers up, there's effectively nothing — but "effectively nothing" fades in so gradually that picking the exact height where sky becomes space is a human decision, not a physical fact. The 100-kilometer line was chosen partly because it's a tidy round number. The universe does not deal in tidy round numbers. We do.

So the fight over Branson's altitude isn't really about physics. It's about who gets to hold the pen. Because whoever draws the boundary of space also draws the boundaries of everything that trails behind it — licensing regimes, liability, the legal definition of "spaceflight," the marketing rights to call your ticket-holders astronauts, the plain prestige of having Gone To Space. Three billionaires spent the summer of 2021 racing not just to the sky but to the definition of the sky, because the definition is worth more than the altitude.

It's tempting to call this how a commons gets enclosed — not with a fence but with a name. That's the old pattern, after all: the high seas, the airwaves, the electromagnetic spectrum, the deep-ocean floor. First the thing is nobody's, then someone draws a line across it, then the line has an owner and the owner has lawyers. But look at what the altitude fight actually hands out. Not deeds — credentials. Nobody who wins the 80-versus-100 argument walks away owning a piece of the sky; the 1967 Outer Space Treaty forbids that outright, declaring the cosmos the "province of all mankind." Drawing the line grants a word, not a territory. The name is the ceremony, not the seizure.

So where's the seizure? Not at the altitude line — in orbit. While we bickered over who gets to say "astronaut," the actual commons was being taken the oldest way there is: by occupation. Low Earth orbit holds only so many usable shells, and the outfits with the rockets have been filling them — megaconstellations of thousands of satellites, radio spectrum and orbital slots claimed by whoever got there first with the hardware to hold them. That's the enclosure. It runs on capability, not vocabulary. The pen only ratifies what the rocket already took.

The Outer Space Treaty was written for a world with two spacefaring governments; it creaks badly in a world of joyriding private rockets. Bezos went up nine days after Branson, and the constellations have multiplied every year since. Five years on, "province of all mankind" sounds quainter than ever — the province is filling up, and not with all of mankind.

None of which subtracts anything from the genuine strangeness of what Branson did: a man made of ancient stardust rode a machine higher than any bird, hung briefly in the black, and saw his whole species' home as a single fragile arc. That's real. That's astonishing. It's also, apparently, a branding opportunity.

The map didn't get drawn by whoever had the best PR team. It got drawn by whoever had the rockets — and in the five years since Branson hung in the black, they've kept drawing it, shell by orbital shell. The line they argued over was always invisible; space, the actual thing, doesn't care where we say it starts. Only we care. But the ones with the hardware to reach it are the ones who decide who's allowed in. They never needed to win the definition. They just needed to get there first.