The sky is filling up, and no one owns it

The gold rush overhead

Every week now, another batch of satellites goes up. This week it was 24 more Starlinks from California. On paper, the plans are far bigger. One company wants 88,000 satellites; another wants 5,105 that beam straight to your phone. Officials are openly modelling an orbit that one day holds a million. The biggest network flying today has about 10,000. The reason nobody stops the rush is not greed or recklessness. It is that the orbit above your head belongs to no one.

A field with no fence

Low-Earth orbit is what economists call a commons. Two things make it one. It is open: any country or company with a rocket can use it. And it is rivalrous: the space one satellite occupies is space another cannot. A shared pasture works the same way. So does a fishing ground, a quiet street, or the radio spectrum that carries every satellite signal. That spectrum cannot legally be owned, as one writer noted - yet everyone is racing to control it.

Why sensible people overfill it

Here is the trap, and it is worth slowing down on. When you launch a satellite, you keep everything it earns. But the cost you add - a little more crowding, a little more collision risk, a little more junk - is spread across every operator, now and in the future. Your share of that cost is tiny. So the sums almost always say launch. They say it to you, and to your rival, and to the next country that wants in. Everyone runs the same math and reaches the same answer. The orbit fills not despite everyone being reasonable, but because of it.

The bill with no name on it

The shared cost is real, even if no single launch seems to cause it. Around 750,000 pieces of debris larger than a centimetre already circle Earth at roughly 40,000 kilometres an hour. At that speed, a marble-sized fleck hits with the force of a hand grenade. Operators already dodge collisions hundreds of thousands of times a year. In a million-satellite orbit, one analyst put that near half a billion dodges a year. Push it far enough and collisions make more debris, which causes more collisions - a cascade that could wall off orbit for decades. That is the pasture grazed to dust.

Who is standing under this sky

It is easy to read this as a fight between rocket companies. It is not only theirs. The same satellites carry your phone signal, your weather forecast, your GPS - and they depend on an orbit staying clear enough to fly through. Astronomers a continent away warn the crowded sky could wash out the stars for everyone, and that no law can stop it. You never chose to be in this system, but you are inside it, downstream of every launch, sharing the bill you had no say in.

The arrangement that made it this way

The emptiness of the rulebook is not an accident of nature; it is a choice that now looks like plain fact. The agreements that opened space declared that no nation could claim it. That was a gift - it kept orbit open to all, not carved up by the first powers to arrive. But the same rule that made orbit un-ownable also made its cleanup nobody’s job. A resource with no owner has no one obliged to protect it. The openness and the neglect are two sides of one decision, and it served the early users well even as it left the tab unpaid.

What actually saves a commons

The comforting part is that a ruined commons is not a law of nature. Fishing grounds recover under agreed quotas; pastures survive under shared rules; orbit could too. Engineers are testing drag sails that pull dead satellites down to burn up, and radar nets that track the junk - first steps toward paying the shared cost. What they cannot supply is the agreement. A commons is saved only when the users bind themselves to limits together, and that is the hard part, because each one still profits by being the exception. No single operator, and no single seat on the ground, can see the whole sky at once - which is exactly why the whole sky is so easy to lose.