Title: The World’s First Wooden Satellite: An Impressive Feat Achieved by Japan

Japan has reached a new milestone in space exploration by constructing the world’s first wooden satellite, a significant breakthrough in the field. This achievement is not merely a technological feat but also an environmentally friendly solution that addresses the growing concern of space debris.

The wooden satellite, developed by Sumitomo Forestry and Kyoto University, is an innovative response to the escalating problem of space junk. There are approximately 6,000 satellites currently orbiting Earth, and more than half are defunct or obsolete. When these satellites re-enter the Earth’s atmosphere, they burn up, releasing tiny alumina particles that remain suspended for many years, potentially contributing to climate change. The use of wood in satellite construction eliminates this concern as wood does not release harmful substances when it burns.

Japan’s wooden satellite is not just a scientific novelty but a step towards sustainable space exploration. It represents a shift in how we think about materials for spacecraft construction, traditionally focused on metal and composites for their durability and resistance to harsh space conditions. However, the successful development and deployment of a wooden satellite show that more eco-friendly materials can also meet these rigorous requirements.

The project began in 2020 and is in the testing phase to confirm the durability of different types of wood in extreme conditions. The researchers are examining the wood’s resistance to sunlight, temperature changes, and the vacuum in space. The results of these tests will determine the wood to be used in the satellite manufacturing.

The wooden satellite also offers advantages beyond environmental impact. Wood is a poor conductor of heat, which could protect delicate satellite equipment from temperature fluctuations. Additionally, wooden satellites could potentially reduce radio signal interference, as metal structures can obstruct signals.

The development of the wooden satellite is a promising development for future space missions. It paves the way for more sustainable practices in space exploration and could lead to a decrease in the amount of harmful space debris. This innovative project represents Japan’s commitment to environmental sustainability and technological advancement.

While the wooden satellite is a significant achievement, it is just one part of the solution to the space debris problem. The international space community continues to explore other strategies to manage and mitigate space debris, such as satellite servicing and active debris removal.

The wooden satellite project is a testament to Japan’s ingenuity and leadership in space technology. It also serves as a reminder of the need for continual innovation and change, particularly in sectors that have a significant impact on our environment. As we continue to explore and utilize space, it is crucial that we do so sustainably, with consideration for the long-term effects of our activities. The wooden satellite is a step in the right direction and presents a new way of thinking about our ventures into the cosmos. It is indeed a pretty big deal.


Kyoto University and Sumitomo Forestry have collaborated to create the world’s first wooden satellite, LignoSat, which will be launched to space on a SpaceX rocket in September. The satellite will then journey to the International Space Station (ISS) for testing. The project, which took four years to complete, seeks to promote the use of non-metal materials in the construction of satellites.

The use of wood in satellite construction offers several advantages. Firstly, wood is a sustainable resource that does not lose mass or decay in space-like conditions. Secondly, when wooden satellites re-enter the Earth’s atmosphere, they are expected to burn up entirely without leaving harmful residues. This is in stark contrast to metal satellites, which can survive re-entry and contribute to pollution and debris on Earth.

Wood also has the advantage of being transparent to many wavelengths, which allows antennas to be safely housed within the satellite’s wooden frame, thus eliminating the need for external antennas. The current practice of deploying external antennas whenever a new satellite is launched into orbit can sometimes fail, making wood a simpler, cheaper, and less risky option.

The LignoSat, which measures 10 cm in all directions, is made of magnolia wood. After being shipped to the Japanese space agency, JAXA, it will be sent to the ISS for strength and durability tests. Data from the satellite will be sent to researchers who will check for signs of strain and whether the satellite can withstand significant temperature changes.

The increasing number of satellites has created several problems, including space debris that threatens the ISS and other manned missions, and light pollution that affects astronomical observations and the natural night sky. One of the biggest issues, however, is the safe decommissioning of satellites. Satellites that survive re-entry can contribute to pollution in the Earth’s atmosphere and on its surface. They can also leave harmful residues and debris behind.

If the LignoSat test is successful, it could pave the way for more wooden satellites in the future. This could help alleviate some of the issues associated with satellite pollution, as wooden satellites would not leave harmful residues or debris behind after re-entry. The researchers have expressed their desire to create a completely wooden satellite, including the electronic substrate portion, in the future. This could potentially revolutionize the way satellites are constructed and decommissioned, making space exploration safer and more sustainable.



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