SENER is taking part in the EXOMARS scientific mission of the European Space Agency (ESA) to study Mars, which will be launched in 2013. The mission comprises a Lander module, which must reach the surface of the planet with a Rover vehicle, which will be responsible for exploring the planet. The Rover has a probe system that will allow it to obtain Martian soil and rock samples up to a depth of 2 metres, a feature that makes EXOMARS a unique mission.

SENER is responsible for the Rover Support Structure and Exit System (SES) of the Mars Lander Platform as well as for some of the equipment of the probe system.

The SES includes the structure that houses and protects the Rover, the rest of the avionics and scientific equipment of the descent module from Earth until landing on Mars as well as the mechanisms that allow the structure to be released and deployed and the Rover to exit.

SENER is studying two basic configurations of the system, one for closed airbags and another for open airbags. The SES for the closed–airbag configuration is shaped like a tetrahedron with a triangular base plate and three deployable triangular petals. The petals contribute to the structural integrity of the SES and to its support interface. Moreover, they act as exit ramps for the Rover. On the other hand, the SES for the configuration with gradually deflating airbags has the shape of a hexagonal base plate beneath which the airbags are housed, and deployable protection covers. The base plate ensures the structural integrity of the SES and its support interface. Furthermore, the covers are dimensioned to protect the equipment during the landing on Mars and act as exit ramps for the Rover.

In the probe system, SENER is responsible for the extension rods that allow the drilling head to drill to the required depth of 2 metres as well as the transfer group for moving the carriage within the probe box, allowing it to move forward during the drilling process. Lastly, SENER is also responsible for the probe box positioner, which positions it on the terrain to allow drilling and which subsequently withdraws it.