Indeed, Japanese scientists have achieved a unique feat by creating a satellite made of wood. This innovative project is a collaboration between scientists from Kyoto university and the logging company Sumitomo Forestry. The purpose of this wooden satellite is to explore the use of biodegradable materials, like wood, for space applications.
The idea behind developing a wooden satellite stems from concerns about the environmental impact of traditional satellites, which burn up upon re-entry into the Earth's atmosphere, leaving behind small aluminium particles that can linger in the upper atmosphere. Japanese astronaut and aerospace engineer Takao Doi had previously highlighted this issue, suggesting that using wood for satellites could address the problem, as wood would completely burn up upon re-entry.
The scientists conducted thorough testing to ensure the feasibility of wooden satellites. Various types of wood were examined, and their ability to withstand long flights in orbit around the Earth was assessed. Samples of the wooden satellite were sent to the international Space Station for a year-long testing period before being brought back to Earth.
Surprisingly, the wood showed no signs of damage during the testing period in space. Scientists attribute this resilience to the absence of oxygen in space, which prevents the wood from burning. Magnolia tree wood, known for its strength, was used in creating the satellite.
This project represents a novel approach to satellite design, exploring the possibilities of sustainable and environmentally friendly materials for space applications. While the wooden satellite may not be a standard practice yet, it highlights the ongoing efforts to find eco-friendly solutions for space exploration.
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