Established in 1985 as Satellite Services B.V. (SSBV) in 2016 has been acquired by Celestia Technologies Group and re-branded to Celestia Satellite Test & Simulation B.V. to continue as competence centre for EGSE and TT&C solutions.

Celestia STS testing equipment is available in standard functionality or configured to meet specific customer needs. Typically equipment is used either in clean room AIT environments or in ground stations.

C-STS has a strong customer base, having delivered many systems to a variety of leading companies and institutions within the space industry including the European Space Agency (ESA), Airbus Defence and Space (ADS), Thales Alenia Space (TAS), OHB System (OHB), Surrey Satellite Technology Ltd. (SSTL) and many others.