Plasma Tunnels Reveal How Dying Satellites Fall to Earth
German researchers are using plasma wind tunnels to study how satellite debris burns up during atmospheric reentry. As the number of satellites in orbit increases, scientists are concerned about the potential environmental impact of metallic ash on the ozone layer.
Why it matters
The rapid growth of satellite constellations poses new, poorly understood risks to the Earth's atmosphere and orbital safety.
Researchers in Germany are melting chunks of satellites in high-temperature plasma wind tunnels to simulate how space debris burns up in Earth’s atmosphere. These tests are revealing in relation to trends about satellite reentry as the population of objects in low Earth orbit swells today .
Only a handful of facilities around the world are capable of conducting reentry simulation tests like the German researchers are performing. In particular, the researchers raise concern that ashes from reentry that remain in the upper atmosphere could increase ozone depletion and alter the atmosphere’s thermal balance in the process.
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