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Proba-3 becomes two: satellites separated

Written by  Wednesday, 15 January 2025 07:00
Proba-3 satellites

Last night a crucial step in the European Space Agency’s eclipse-making Proba-3 mission was completed: the two spacecraft, flying jointly since launch, have successfully separated. This leaves them ready to begin their cosmic dance in the world’s first-ever precision formation-flying mission.

Inspecting the separation system before launch
Inspecting the separation system before launch

Last night, 14 January, at 23:00 GMT (15 January 00:00 CET), the pair successfully separated from each other while flying 60,000 km above Earth at a speed of 1 km per second.

Proba-3 mission manager Damien Galano describes the critical milestone: “The separation relied on a well-known technology, routinely used when a spacecraft separates from its launcher. The two Proba-3 spacecraft were held together by a clamp-band, which is essentially a belt tightened around two metal rings, each attached to one spacecraft. Once the clamp was released, the two satellites started slowly drifting away from each other.”


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