The world’s first wooden satellite developed by Japan has been exposed to space. The Lignosat was deployed alongside four cubesats from the International Space Station (ISS) in December 2024 to test alternatives to conventional satellites.
It was developed by Kyoto University and Sumitomo Forestry after wood quality was tested in space.
Wood you look at that! LignoSat recently deployed from @Space_Station. @JAXA_en‘s wooden satellite investigates how wood survives in the space environment and transmits data. Findings could offer a more sustainable alternative to conventional satellites. https://t.co/jD6OmunG4w pic.twitter.com/voK3DBKb5i
— ISS Research (@ISS_Research) December 13, 2024
The satellite was launched to the station by SpaceX in November last year as a step toward building environment friendly satellite and reduce space debris. It weighs about 900 grams and is made of 10 cm long honoki magnolia wood panels assembled with a Japanese wood-joinery method without the use of glues or screws.
In a blog published on Tuesday, NASA said that the satellite’s performance will be monitored by researchers.
“Researchers will use sensors to evaluate strain on the wood and measure its responses to temperature and radiation in space,” the agency stated. “Geomagnetic levels will also be monitored to determine whether the geomagnetic field can penetrate the body of the wooden satellite and interfere with its technological capabilities. Investigating uses for wood in space could lead to innovative solutions in the future.”
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The deployment followed extensive experiments aboard the ISS that tested the durability of wood in space environment. Based on the results of the Exposure Experiment of Wooden Specimen to Outer Space, scientists settled on honoki magnolia wood.
The satellite will reportedly float in orbit for six months, enduring radiation and temperature swings from –65°C to 125°C. Traditional satellites are made using materials such as aluminium, titanium, teflon and thermoplastic which harm the atmosphere when they burn up after decommission.
Some of the materials just float in orbit in the form of debris, posing risk to satellites and the space station. Wooden satellites, experts, hope will solve these problems.
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(Image: NASA)