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The Japanese government is looking for ways to deal with space debris. Space junk has been piling up since the space age began, consisting of satellites, rocket parts, and wreckage from collisions. With the growing number of satellites being launched in recent years, this issue is even more concerning.
As a result, the space will become even more crowded. Approximately one million pieces of debris larger than 10 centimeters are in Earth's orbit, according to the European Space Agency (ESA).
Toru Yamamoto, a researcher at the Japan Aerospace Exploration Agency (JAXA), envisions using lasers to remove space debris. By vaporizing them, the laser beam will create a pulse of energy that will push the object into a new orbit.
It will not be necessary to touch any debris because the laser will irradiate it. In comparison with bullets, space debris can move at a speed of about 7.5 kilometers per second. In the spring of 2025, the project will be tested in space, but right now it's an experimental project.
Many agencies are working on projects to solve the space junk problem. There are Japanese, European, and US companies that are leading the way in developing solutions.
As for the tow truck idea, it is also further along now. Using a magnet, it will collect satellites that are no longer needed. The firm, Astroscale, conducted a successful trial last year. It plans to conduct a second test by the end of 2024 and launch its service soon afterward.
There are also efforts to develop satellites that do not produce debris. A wooden satellite designed by Kyoto University and Sumitomo Forestry will be launched into orbit in a rocket and burn up safely when it returns to earth. We are still in the early stages of this project.
A piece of wood was sent to the International Space Station (ISS) earlier this year to test its response to cosmic rays.
However, there are still challenges to overcome. It has taken many firms a long time to develop a scalable model for removing junk from space. A successful model will require a lot of time, research, and money. They do not want to create debris that would interfere with other satellites.
Scientists are still trying to figure out how to best deal with the space clutter for now. The agencies are also considering using systems that are already in place. There may be a long time before we can find a solution. As long as space debris floats in space, the world must keep an eye on it.
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