Gaia Payload Data Handling Unit
![](https://cdn.sci.esa.int/documents/33580/35361/1567217445059-Gaia_PDHU_EQM_2_625.jpg)
Date: 21 May 2013
Satellite: Gaia
Depicts: Gaia Payload Data Handling Unit
Copyright: Syderal SA
The Gaia Payload Data Handling Unit (PDHU) is, among other things, the 'hard-disk' of Gaia, responsible for temporary storage of science data received from the telescope before transmission back to Earth.
Last Update: 1 September 2019