Satellite Subsystem

"A spacecraft has a number of essential components, such as an engine, power subsystem, steering system and communications system, in addition to science instruments." (ESA, 2013)

Sources

"Anatomy of a spacecraft". Space Science, ESA. Last modified June 12, 2013.
https://www.esa.int/Our_Activities/Space_Science/Anatomy_of_a_spacecraft.
Accessed February 1, 2019.