Space Debris and Mega-Constellations Threaten Orbital Access for All

Every day, without thinking about it, you depend on space. The weather forecast on your phone, the money moving through your bank account, the GPS guiding your car, the text message arriving in seconds—all of it travels through orbit. Most people rely on space-based services roughly thirty times daily, often without realizing it. Even if you rejected modern technology entirely, you would still benefit from it indirectly. The crops that feed you, the ships that carry goods across oceans, the supply chains that stock shelves—all of it runs on infrastructure that lives above the atmosphere.

Yet the rules governing this critical domain are shockingly thin. The entire body of international law regulating human activity in space consists of a single two-page document signed in 1967. The Outer Space Treaty was revolutionary for its time, preventing Earth's orbit from becoming a theater of military conflict. But it was written when only governments launched satellites, and it says almost nothing about the private corporations now flooding orbit with thousands of machines.

In less than a decade, the number of satellites in orbit has more than doubled. There are now over 18,000 satellites circling Earth, and the pace is accelerating. SpaceX has applied to launch one million satellites as part of its Starlink constellation—more than fifty times the current total, and more than one hundred times what existed a decade ago. Other companies and nations are pursuing their own mega-constellations. The math is stark: if SpaceX deployed a million satellites, collision-avoidance systems would need to execute evasive maneuvers every 0.03 seconds. In the first six months of 2025 alone, Starlink satellites performed 144,404 such maneuvers.

The real danger lies in what happens when satellites collide. Space debris already numbers 36,000 tracked objects larger than ten centimeters. Below that threshold, the count exceeds 100 million pieces. A speck of metal one millimeter across, traveling at several kilometers per second, carries the force of a bullet. Astronaut Tim Peake photographed one such fragment embedded in the International Space Station's window—a permanent scar from an invisible strike. Scientists worry about Kessler Syndrome, a cascade where one collision spawns thousands of fragments, which then collide with other satellites, multiplying debris exponentially until entire orbital zones become unusable. Recently, a Starlink satellite broke apart into dozens of fragments without explanation—the second unexplained breakup since November. The debris will likely burn up in the atmosphere within weeks, but the pattern is unsettling.

The consequences extend beyond orbit. Satellites are brightening the night sky faster than predicted, introducing light pollution to remote regions that have never known artificial light. This damages ecosystems and disrupts the circadian rhythms of plants and animals. Indigenous communities worldwide rely on the night sky for navigation, ceremony, and cultural practice. Astronomical observatories, both ground-based and space-based, are increasingly photobombed by satellite streaks. The next-generation radio observatory SKAO, built in South Africa and Australia at enormous cost, faces interference from radio emissions from passing satellites. Billions of dollars have been invested in observatories that may become partially obsolete.

There is also the question of what happens when satellites reach the end of their lives. They are designed to burn up in the atmosphere, releasing metal fragments. The long-term effects on the ozone layer and climate remain unknown. Sustaining a population of millions of satellites would require dozens of launches per day for years, pumping black carbon, water vapor, and other substances into the atmosphere at scales never before attempted. One space sustainability expert called the one-million-satellite proposal the single greatest threat to orbital sustainability in history.

Photographer Max Alexander, who has documented these overlapping crises in an exhibition called "Our Fragile Space," frames the problem simply: space is not an unlimited resource. About eighteen percent of the global economy depends on access to orbit. If entire orbital zones become too dangerous to use, those services vanish. The alternative is a circular space economy where satellites are refueled and maintained rather than discarded, where launches are regulated, and where the rules governing space are updated to reflect the reality of private industry. It is, as Alexander says, about peaceful coexistence—using space sustainably, or losing it altogether.