Cluster's final reentry strengthens data for safer, more sustainable satellite design

On Sept. 1, 2026, the fourth Cluster satellite, Tango, reentered Earth's atmosphere at 21:30:31 UTC, marking the final reentry of the four Cluster satellites. The reentry was carefully planned and targeted for a safe, controlled descent over the South Pacific Ocean. The ROSIE airborne mission observed Tango's reentry, using a Nikon Z8 camera operated by the University of Stuttgart. The data collected from Tango's reentry provided valuable insights into the reentry process and contributed to the development of safer satellite designs.

The Cluster mission, which ran from 2001 to 2024, ended with Tango's reentry, and the data from this event helped establish a proven method for safe end-of-life disposal of satellites. The ROSIE team observed both Samba and Tango, with Tango's reentry being the most detailed observation. The data collected from Tango's reentry, along with the observations from Samba's reentry, helped improve understanding of the destructive process and informed future satellite design.

The Cluster mission's final reentry data will be used to refine reentry models and improve predictions of satellite fall paths. The data from Tango's reentry, combined with the observations from the ROSIE mission, will help in the development of more sustainable satellite systems. The Cluster mission's success was a milestone for the space community, and the data collected will continue to support research and development in space debris management.

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