Astronomy & Space Exploration

Wooden satellite

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

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LignoSat, developed by Kyoto University and homebuilder Sumitomo Forestry, opens new tab, will be flown to the International Space Station on a SpaceX mission, and later released into orbit about 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. Decommissioned satellites must re-enter the atmosphere to avoid becoming space debris. Conventional metal satellites create aluminum oxide particles during re-entry, but wooden ones would just burn up with less pollution.

space debris in Earth orbit

India aims to achieve debris-free space missions by 2030

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Low Earth orbit is littered with about 30,000 objects larger than a softball and millions smaller than a centimeter. A bombshell study found unexpectedly high amounts of vaporized metals polluting Earth’s stratosphere, which is home to the fragile ozone layer, whose chemical makeup can be altered by satellite material. Another study posted to the preprint server arXiv suggested that debris from burning satellites could be altering our planet’s magnetic field.

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