Military

Dangerous New Debris Field: Inside the Russian Anti-Satellite Test

November 19, 2021Coffee or Die
An astronaut works on the Solar Max satellite in 1984.  During repairs inside the Space Shuttle, the astronauts discovered that several metal louvers and thermal blankets were damaged by debris. NASA photo.

An astronaut works on the Solar Max satellite in 1984. During repairs inside the Space Shuttle, the astronauts discovered that several metal louvers and thermal blankets were damaged by debris. NASA photo.

On Nov. 15, 2021, U.S. officials announced that they had detected a dangerous new debris field in orbit near Earth. Later in the day, it was confirmed that Russia had destroyed one of its old satellites in a test of an anti-satellite weapon. Wendy Whitman Cobb is a space security researcher. She explains what these weapons are and why the debris they create is a problem now – and in the future.


What do we know?


Russia launched an anti-satellite test that destroyed one of its older satellites. The satellite broke up and created thousands of pieces of debris in orbit, ranging in size from tiny specks up to pieces a few feet across. This space junk will linger in orbit for years, potentially colliding with other satellites as well as the International Space Station. The space station crew has already had to shelter in place as they passed near the debris cloud.


Dangerous New Debris Field
View of an orbital debris hole made in the panel of the Solar Max satellite. NASA photo.

What’s an anti-satellite weapon?


Anti-satellite weapons, commonly referred to as ASATs, are any weapon that can temporarily impair or permanently destroy an orbiting satellite. The one that Russia just tested is known as a direct ascent kinetic anti-satellite weapon. These are usually launched from the ground or from the wings of an airplane and destroy satellites by running into them at high speeds.


A similar weapon type, called co-orbital anti-satellite weapons, are first launched into orbit and then change direction to collide with the targeted satellite from space.


A third type, non-kinetic anti-satellite weapons, use technology like lasers to disrupt satellites without physically colliding with them.


Space agencies have been developing and testing anti-satellite weapons since the 1960s. To date, the U.S.RussiaChina and India have demonstrated the ability to attack satellites in orbit that support services like GPS, communications and weather forecasting.


Dangerous New Debris Field
The ASM-135A anti-satellite missile (ASAT) was the only U.S. air-launched missile ever to destroy a satellite. In 1985, an ASM-135A destroyed a real satellite in a pre-planned test. An F-15A jet launched the missile at 38,100 feet. Streaking into space, the missile homed in on the U.S. Solwind P78-1 satellite at 345 miles above the Earth, and impacted the one-ton spacecraft at about 15,000 mph. US Air Force photo by Ken LaRock.

Why is debris a problem?


Regardless of the cause, space debris is a serious problem.


Larger pieces are easier to track and avoid but it’s difficult to track pieces smaller than 4 inches (10 centimeters). Even small debris can still pose a major threat though. Space debris is often traveling faster than 17,000 mph around the Earth. At that speed, pieces of debris could destroy any spacecraft or satellite it collided with. In the 1980s, a Soviet satellite broke up as a result of a suspected debris strike.


More worrisome is the danger debris poses to crewed space missions. In July 2021, one of the International Space Station’s robotic arms was struck by a piece of debris that put a 0.2-inch (0.5 cm) hole clean through a part of the arm. While the damage did not need to be fixed, officials characterized it as a lucky strike – if it had struck a different part of the station, the situation could have been a lot worse.


Space debris is also a significant threat to people on Earth. Satellites play a vital role in the global economy through GPS, communications and weather data. If services such as these were disrupted, there would be significant economic cost. One study found that a GPS outage could cost the U.S. up to $1 billion a day.


Dangerous New Debris Field
Low Earth orbit is the region of space within 2,000 km of the Earth’s surface. It is the most concentrated area for orbital debris. NASA graphic illustration.

There are currently thousands of pieces of space junk circling the Earth, with sources as varied as old rocket bodies, dead satellites, debris from previous collisions and tests, and lost items from astronauts. The problem – like with the environment – is that there is little incentive for individual countries to avoid generating debris or clean it up.


The amount of space debris has only increased over time. For years, scientists have been warning about the possibility of a collision cascade. As the amount of debris increases, the chance of collisions between it and other satellites and debris also goes up. More collisions might then leave certain orbits completely unusable. While this could take decades to play out, events like the Russian test will only make such an outcome more likely.


Dangerous New Debris Field
Solid rocket motor (SRM) slag. Aluminum oxide slag is a byproduct of SRMs. NASA photo.

What to do now?


In the short term, little can be done to mitigate this new cloud of space debris, but anyone with anything in space is on high alert to avoid it.


The U.S. government and commercial companies are tracking the new debris, and the crew on the International Space Station have been ordered to keep certain modules closed off as they continue to pass through the debris cloud. As the new debris spreads out and the pieces are tracked, station controllers will have a better understanding of the danger posed to the crew.


In the long run, experts recommend working on global solutions to remove debris. This includes taking measures to prevent debris in the first place and removing debris that is already in space. Several governmental and international organizations have proposed ways to prevent new debris, but these are informal and not legally binding.




Remediation is a tougher challenge. Technology to remove debris has not yet been fully developed, but even still, its deployment is a sensitive subject. The same technology that might be used to remove a piece of space junk could also be used for attacking a satellite. This dual-use technology poses challenges, as it can raise suspicions that countries are testing anti-satellite weapons under the cover of debris removal.


Despite the difficulties, there is growing international recognition that space debris is a dangerous problem. A consortium of private companies recently created the Net Zero Space charter to reduce debris, and the U.S. Space Force is looking for ways to combat the problem as well. While the world still does not yet have a full understanding of Russia’s actions, this event is a wake-up call on the importance of efforts to reduce pollution in Earth’s orbit.


This story appeared first in The Conversation on Nov. 16, 2021. The Conversation is a community of more than 135,400 academics and researchers from 4,192 institutions. 


Read next:   That Time the Soviet Union Put Out a Gas Fire With a Nuclear Explosion



Coffee or Die
Coffee or Die

Coffee or Die is Black Rifle Coffee Company’s online lifestyle magazine. Launched in June 2018, the magazine covers a variety of topics that generally focus on the people, places, or things that are interesting, entertaining, or informative to America’s coffee drinkers — often going to dangerous or austere locations to report those stories.

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