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Space debris has become a major issue that cannot be ignored. Tens of thousands of man-made objects orbit the Earth, most of them no longer functional. Beyond that, there are millions of tiny fragments that are nearly impossible to track. All of these objects pose real threats to active satellites, the International Space Station, and future space missions. The latest data from the European Space Agency (ESA) shows that more than 40,000 objects are being monitored in orbit. Of that number, only around 11,000 remain active, while the rest consist of dead satellites, rocket stages, and debris.

In addition to the officially tracked numbers, the actual count is much higher. Statistical models estimate more than one million objects between one and ten centimeters in size that are not properly monitored. For even smaller fragments, the total could reach into the hundreds of millions. Despite their tiny size, such particles can cause catastrophic damage when colliding with satellites traveling at orbital speeds. This has led the international community to grow increasingly concerned about the future of Earth’s low orbit, which is becoming ever more congested.

ESA’s 2025 report highlights the alarming scale of this issue. The total mass of human-made objects in orbit is estimated to exceed 14,700 tons. This figure includes active satellites, defunct satellites, rocket stages, and small collision fragments. It illustrates the immense burden that must be managed if Earth’s orbit is to remain safe for use.

This situation has prompted many international organizations to seek solutions. NASA, ESA, and other space agencies are conducting intensive research into risk mitigation. At the same time, experts warn that the problem cannot be solved if major nations continue testing anti-satellite weapons that create thousands of new fragments.

One of the largest contributors to space debris is dead satellites and rocket stages left drifting after launches. Each time a rocket delivers satellites to orbit, its final stage often remains in orbit. If not deorbited properly, these stages continue circling Earth uselessly.

This creates long-term risks. Many rocket bodies still contain leftover fuel, which can trigger explosions in orbit. Such explosions generate dozens or hundreds of fragments, further cluttering space. These incidents have happened repeatedly, worsening the problem.

Researchers emphasize the need for international standards requiring operators to perform safe end-of-life disposal. Without stricter rules, the number of derelict objects will keep growing every year.

Besides dead satellites and rocket bodies, orbital collisions are another major source of debris. One of the most infamous cases was the collision between Iridium-33, an American satellite, and Cosmos-2251, a Russian satellite, in 2009. That event created thousands of new fragments still orbiting today.

Collision fragments tend to spread widely. Some plunge into lower orbits and eventually burn up in the atmosphere. Yet many remain in medium and higher orbits for decades. These fragments increase the likelihood of further collisions, raising the risk of a cascading effect known as the Kessler Syndrome.

Experts warn that once such a chain reaction begins, Earth’s low orbit could become too hazardous to use. The result would disrupt global communications, navigation, and even scientific research.

Anti-satellite weapon (ASAT) tests are among the most controversial debris sources. In 2007, China destroyed its own Fengyun-1C satellite with a missile. That single event produced more than 3,000 trackable fragments, not including countless smaller particles. Most of those remain in orbit to this day.

The United States, Russia, and India have also conducted similar tests on a smaller scale. Each of them generated additional debris, compounding the risks for all nations. International criticism has been strong because such actions are seen as reckless, damaging a shared orbital environment.

Although some countries argue these tests are necessary for defense, experts counter that their consequences far outweigh any benefits. Debris created in orbit knows no borders and can threaten commercial, military, and scientific satellites alike.

Tracking space debris is not easy. Radars and telescopes can only monitor objects larger than 10 centimeters in low Earth orbit. Smaller objects are much harder to detect. Yet even a fragment just a few centimeters across can destroy a satellite when moving at orbital velocity.

Several organizations are experimenting with new ways to reduce debris. Concepts range from giant orbital nets and ground-based lasers to cleanup satellites designed to capture and deorbit junk. However, these ideas face enormous technical and financial hurdles.

The United Nations’ Committee on the Peaceful Uses of Outer Space (COPUOS) has issued mitigation guidelines for years. These recommend that nations dispose of dead satellites and prevent explosions in orbit. But the rules are voluntary, with no penalties for violators.

ESA has launched ClearSpace-1, the first mission designed to actively remove large debris from orbit. Scheduled for launch in the coming years, it could serve as a model for future cleanup efforts.

In the United States, NASA is partnering with private companies to test similar technologies. Firms like Astroscale are developing satellites capable of capturing and deorbiting old spacecraft. These initiatives show growing international seriousness, though real results will take time.

Many people assume space debris is only a technical problem. In reality, the impact reaches directly to life on Earth. Modern infrastructure relies heavily on satellites. From telecommunications and GPS navigation to weather forecasting, all are at risk if satellites are struck by debris.

The financial losses could run into billions of dollars. More importantly, the sudden loss of satellite services could disrupt global transportation, trade, and even emergency response. This is why experts stress that the issue is not just technical but a matter of global security.

Without decisive action, the amount of space debris will continue to grow. ESA projections warn that even if all launches were halted today, debris numbers would still rise due to ongoing collisions. This proves that active cleanup is not optional but necessary.

Meanwhile, the rise of mega-constellations like SpaceX’s Starlink adds new challenges. Thousands of satellites are being deployed each year, further crowding orbit. While many companies commit to controlled deorbiting, the risks remain high.

The best approach must combine technology and policy. Technology can remove existing debris, while global policies must ensure no new risks are created. Without worldwide cooperation, unilateral efforts will not be enough.

Some experts propose an international licensing system for satellite operators. Such licenses would mandate clear end-of-life plans, including controlled deorbiting. Others suggest creating a global orbital traffic authority, similar to the International Civil Aviation Organization (ICAO) for air travel.

Space debris has already become a clear threat to the future of space exploration. Its numbers keep growing, caused mainly by dead satellites, rocket stages, collisions, and weapon tests. Without collective action, Earth’s orbit may become too dangerous to use. That is why public awareness and global cooperation are essential. To explore this issue further, readers can follow Olam News for in-depth reports on space and global technology developments.

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ESANASAOrbital CollisionRocketsSatellitesSpace Debris