Scientists Track Satellite Breakup in Atmosphere Using Private Jet

An international research team has successfully tracked the disintegration of two European Space Agency (ESA) satellites as they reentered Earth's atmosphere, utilizing a specially equipped private jet. The objective was to investigate the pollution generated by space debris burning up during this reentry process.

The observed events occurred on August 31 and September 1 over the South Pacific. The satellites studied were ESA's Tango and Samba, which were part of the "Cluster" constellation. These satellites served for 25 years, studying the interaction between Earth's magnetic field and solar wind. Their controlled reentry presented a unique opportunity for scientists to understand the phenomena occurring during satellite disintegration.

The growing number of satellites in orbit, driven by companies like SpaceX, Amazon, and Blue Origin, raises concerns about the atmospheric impact of returning spacecraft. This research aims to identify the chemical compounds released during disintegration and determine the extent to which they are completely consumed in the atmosphere, thereby assessing potential risks to life and property on the ground.

From the aircraft, the research team deployed 30 cameras and spectrometers fitted with special filters. These instruments were capable of capturing the entire process of satellite breakup and burning in high detail, including spectral emissions from various chemical elements. Particular attention was paid to aluminum, a primary satellite construction material, whose combustion can form aluminum oxide. Researchers are concerned that an increase in atmospheric aluminum oxide could damage the stratospheric ozone layer.

By analyzing the collected data, researchers aim to precisely model the chemical reactions during satellite disintegration and combustion. The findings will be used to validate existing atmospheric physics and chemistry models and to better understand the potential future impact of the expanding satellite industry on Earth's atmosphere and climate. The team also leveraged experience from the reentry of the Salsa satellite a year prior to enhance the accuracy of this mission.