• Kenyan officials are investigating who owns a mysterious metallic object that fell from the sky.
• The giant ring fell from space, crash-landing into Mukuku Village in Kenya on Wednesday.
• No one was hurt, but space debris poses a serious threat to life on Earth and in space.

On Wednesday, Mukuku Village in Kenya got an unexpected visitor from space.

At about 3 p.m. local time, a large metallic ring weighing about 1,100 pounds and measuring 8 feet in diameter crash-landed in the village, the Kenya Space Agency said in a statement.

The agency said no one was injured, and that the space debris poses no immediate risk.

Maj. Alois Were, an officer with the Kenya Space Agency, told Citizen TV, a Kenyan news station, that the ring-like object is "possibly from a rocket separation stage."

However, it's unclear whose rocket the ring might belong to. Officials said they had collected pieces from the impact site for further analysis to determine its origins.

Were said that once they determine the owner, the space agency will use the "existing legal mechanisms under international law" to hold the person or organization accountable.

Space debris is usually designed to either burn up in Earth's atmosphere before reaching the ground or land in unpopulated areas, like the ocean. This doesn't always happen, though.

For example, in May 2024, a piece of SpaceX debris as large as a car hood crash-landed on a trail at a mountaintop resort just outside Asheville, North Carolina.

If it had landed on a person hiking the trail that day, it would have certainly killed them, Jonathan McDowell, an astrophysicist at the Harvard and Smithsonian Center for Astrophysics and leading space debris expert, told Business Insider in July.

To date, no one has died from space debris raining from the skies. Perhaps the closest call was in March, when a two-pound piece of debris slightly smaller than a soda can fell from the International Space Station, crashing through a family's roof in Florida. The family is suing NASA over the incident.

Ever since humans started launching objects into space in the late 1950s, there has been a risk that some might fall back to Earth in an unexpected place. As humans launch more objects into space, however, that risk is growing.

Between 2008 and 2017, global space organizations launched an average of 82 orbital rockets a year. That number jumped to an average of about 130 launches a year between 2018 and 2022, according to the US International Trade Commission. In 2024, there were about 250 launches — a new record.

This poses risks on Earth and adds to a long-existing problem in space: space clutter and collisions. There's a lot of trash in space, from dead satellites and astronaut gloves to tiny bits no larger than a grape.

These millions of bits of debris are racing around our planet faster than a bullet. It's gotten so bad that about 1,000 warnings of possible impending collisions are issued daily to satellite operators, physicist Thomas Berger said in a press briefing at December's annual American Geophysical Union meeting.

Berger said a major collision could generate "an unstoppable chain reaction of further collisions, ultimately resulting in a completely filled-up space environment."

If that happens, it could make space unusable.

• Space junk has filled up so much of Earth's orbit that it's endangering satellites and astronauts.
• The company Kayhan Space issues roughly 1,000 space-collision warnings per day.
• Earth-orbit experts fear debris will cause an "unstoppable chain reaction" that cuts off launches.

So much junk is filling Earth's orbit that collision avoidance has become a busy business.

"We're talking about the dead satellites, the rocket bodies, the fairings, the wrenches, the gloves, and things like that that have been left up in orbit," physicist Thomas Berger said in a press briefing at the fall meeting of the American Geophysical Union in Washington DC on December 11.

Along with those recognizable objects, there are millions of bits of debris in orbit traveling faster than a bullet.

All that stuff is building up and increasing the risk of explosive space collisions, which is dangerous for astronauts and satellites.

Earth's orbit is so crowded with junk now that roughly 1,000 warnings about possible impending collisions go out to satellite operators each day, Berger said.

For example, Araz Feyzi, a co-founder of the orbital data company Kayhan Space, told BI in an email that some of its customer satellites get up to 800 alerts per day from the US Space Force.

Siamak Hesar, the company's other co-founder, later wrote in a SpaceNews editorial that the company tracks "more than 60,000 alerts per week for a constellation of around 100 satellites."

Most of those warnings come from one neighborhood of Earth's orbit, around 550 kilometers (340 miles) in altitude, where SpaceX's Starlink satellites live.

"It's getting difficult for satellite operators to determine which of these warnings is important and which they have to pay attention to," said Berger, who is the executive director of the Space Weather Technology, Research and Education Center at the University of Colorado, Boulder.

Because trackers can't perfectly predict objects' positions in space, these collision warnings are triggered when objects are expected to pass each other at a close distance. Only a small fraction of warnings actually end in a collision.

When space objects do collide, they eject high-speed debris in multiple directions, creating a new zone of hazardous junk in orbit.

"It could generate a chain reaction, an unstoppable chain reaction of further collisions, ultimately resulting in a completely filled-up space environment," Berger said.

In the worst-case scenario, orbit could become so crowded that there's no safe space for new rocket launches.

That's a situation experts call Kessler syndrome, and "that we hope to prevent," Berger said.

Close calls and near-misses

While rare, major collisions and explosions have happened a few times.

In 2009, an American satellite and Russian satellite crashed together, ending in nearly 2,000 bits of debris large enough to detect — at least 4 inches wide — with thousands more smaller bits.

In 2021, a Chinese satellite and a Russian rocket chunk collided, creating at least 37 pieces of debris large enough for ground systems to track.

And anti-satellite missile tests by Russia, China, and India have blown up dead spacecraft in orbit, sending thousands of chunks flying.

Each of these events created its own field of hazardous debris which still rockets around the planet today with potentially dire consequences.

For example, several times a year, astronauts on the International Space Station get debris alerts and prepare to evacuate if the station is struck. When this happens, spaceships docked to the station will burn their engines to push it out of the way.

Satellite operators often respond to warnings by moving their satellites out of the way. SpaceX told the FCC in July that its satellites had conducted nearly 50,000 collision-avoidance maneuvers in just the first half of the year, Space.com reported.

Unfortunately, not all satellites are maneuverable.

In March, NASA had to sit on its hands and watch as a long-dead Russian spacecraft careened toward the agency's TIMED satellite, which was designed in the 1990s and doesn't have the ability to move on command.

Luckily, the two spacecraft missed each other by 17 meters (56 feet) — not very far by space standards.

"That would've been a hypervelocity impact creating thousands of pieces of debris," Berger said.

Daniel Baker, who directs the Laboratory for Atmospheric and Space Physics at UC Boulder, urged the US Congress to pass the ORBITS Act. The legislation would require federal agencies like NASA and the FCC to support technologies that can remove junk from orbit.

"I believe that we are watching the tragedy of the commons play out in low-Earth orbit right before our eyes," Baker said in the briefing.

"We have to get serious about this and recognize that unless we do something, we are in imminent danger of making a whole part of our Earth environment unusable," he added.