World's first wooden satellite, developed in Japan, heads to space


FILE PHOTO: Takao Doi, a former Japanese astronaut and professor at Kyoto University, holds an engineering model of LignoSat during an interview with Reuters at his laboratory at Kyoto University in Kyoto, Japan, October 25, 2024. REUTERS/Irene Wang/File Photo

KYOTO (Reuters) - The world's first wooden satellite, built by Japanese researchers, was launched into space on Tuesday, in an early test of using timber in lunar and Mars exploration.

LignoSat, developed by Kyoto University and homebuilder Sumitomo Forestry, will be flown to the International Space Station on a SpaceX mission, and later released into orbit about 400 km (250 miles) above the Earth.

Named after the Latin word for "wood", the palm-sized LignoSat is tasked to demonstrate the cosmic potential of the renewable material as humans explore living in space.

"With timber, a material we can produce by ourselves, we will be able to build houses, live and work in space forever," said Takao Doi, an astronaut who has flown on the Space Shuttle and studies human space activities at Kyoto University.

With a 50-year plan of planting trees and building timber houses on the moon and Mars, Doi's team decided to develop a NASA-certified wooden satellite to prove wood is a space-grade material.

"Early 1900s airplanes were made of wood," said Kyoto University forest science professor Koji Murata. "A wooden satellite should be feasible, too."

Wood is more durable in space than on Earth because there's no water or oxygen that would rot or inflame it, Murata added.

A wooden satellite also minimises the environmental impact at the end of its life, the researchers say.

Decommissioned satellites must re-enter the atmosphere to avoid becoming space debris. Conventional metal satellites create aluminium oxide particles during re-entry, but wooden ones would just burn up with less pollution, Doi said.

"Metal satellites might be banned in the future," Doi said. "If we can prove our first wooden satellite works, we want to pitch it to Elon Musk's SpaceX."

INDUSTRIAL APPLICATION

The researchers found that honoki, a kind of magnolia tree native in Japan and traditionally used for sword sheaths, is most suited for spacecraft, after a 10-month experiment aboard the International Space Station.

LignoSat is made of honoki, using a traditional Japanese crafts technique without screws or glue.

Once deployed, LignoSat will stay in the orbit for six months, with the electronic components onboard measuring how wood endures the extreme environment of space, where temperatures fluctuate from -100 to 100 degrees Celsius every 45 minutes as it orbits from darkness to sunlight.

LignoSat will also gauge wood's ability to reduce the impact of space radiation on semiconductors, making it useful for applications such as data centre construction, said Kenji Kariya, a manager at Sumitomo Forestry Tsukuba Research Institute.

"It may seem outdated, but wood is actually cutting-edge technology as civilisation heads to the moon and Mars," he said. "Expansion to space could invigorate the timber industry."

(Reporting by Kantaro Komiya and Irene Wang; editing by Gerry Doyle)

Follow us on our official WhatsApp channel for breaking news alerts and key updates!

   

Next In Tech News

Sirius XM found liable in New York lawsuit over subscription cancellations
US Supreme Court tosses case involving securities fraud suit against Facebook
Amazon doubles down on AI startup Anthropic with $4 billion investment
Factbox-Who are bankrupt Northvolt's creditors?
UK should use new powers to probe Apple-Google mobile browser duopoly, report says
EU regulators scrap probe into Apple's e-book rules after complaint was withdrawn
Hyundai recalls over 145,000 electrified US vehicles on loss of drive power
'World of Warcraft' still going strong as it celebrates 20 years
Northvolt CEO steps down, saying group needs up to $1.2 billion
Bitcoin at record highs, sets sights on $100,000

Others Also Read