Every year, around 80 tons of space debris re-enters Earth’s atmosphere. While most of this debris harmlessly disintegrates, the breakdown process can release chemicals that deplete ozone layers and contribute to atmospheric pollution.
Moreover, any debris that survives re-entry can pose risks on the ground. In orbit, the increasing clutter raises the chances of collisions, complicating space travel and satellite operations.
In response, Japanese scientists are exploring the potential of using more eco-friendly materials in satellite manufacturing. Recently, the world's first wooden satellite was launched aboard an unmanned SpaceX rocket as part of a resupply mission to the International Space Station (ISS). Designed with sustainability in mind, the wooden material of LignoSat is expected to burn up upon re-entry, reducing the generation of metal particles when a retired satellite returns to Earth.
This experimental satellite has sides measuring just 10 centimeters (about four inches) and was safely transported in a special container prepared by the Japan Aerospace Exploration Agency. It is set to arrive at the ISS soon and will be released into space about a month later to test its strength and durability.
Researchers will receive data from the satellite to monitor signs of strain and assess its ability to withstand extreme temperature fluctuations.
