ESTEC IT Support Contacts

The Science and Operations IT team (SITU) at ESTEC deals with different aspects of the science-related IT infrastructure and services. Depending on the type of question you have, you need to contact different members of the team.

For the Web Portal (Cosmos) and Web Applications, please contact the SITU Service Desk.

If you have questions about Linux desktops or UNIX/Linux servers, please contact unix-support.


For all Corporate IT services and applications (e.g. Windows desktops/laptops), please contact the ESA IT Service Desk at

The preferred way to contact them is via email, in case that is not possible they can be contacted by phone as well. Use extension 80700 when at ESA or +39 06 941 80700 when outside ESA.