ESA’s mission to Mars in 2016 has entered the final stage of construction with the signature of a contract today with Thales Alenia Space at the Paris Air & Space Show.

ExoMars will fly two missions, in 2016 and 2018, in a partnership between ESA and the Russian space agency, Roscosmos. Its main goal is to answer one of the outstanding scientific questions of our time: has life ever existed on Mars?

In addition, ExoMars will develop new European technical capabilities in landing, roving, drilling and preparing samples to pave the way for a future Mars sample-return mission in the 2020s.

The first mission will be launched in 2016 and will include the Trace Gas Orbiter (TGO) to search for evidence of methane and other atmospheric gases that could be signs of active biological or geological processes.

It will also deliver the Entry, Descent and Landing Demonstrator Module (EDM) to the surface of Mars, to demonstrate key technologies needed for the 2018 mission and future landing missions.

The 2018 mission will land a rover on Mars – the first with the capability of drilling to depths of 2 m to collect samples that have been shielded from the harsh conditions on the surface, where radiation and oxidants can destroy organic materials.

In addition, the 2018 mission carries a Surface Platform with scientific instruments to investigate the martian environment.