The UK-assembled rover that will be sent to Mars in 2020 will bear the name of DNA pioneer Rosalind Franklin.
The honour follows a public call for suggestions that drew nearly 36,000 responses from right across Europe.
Astronaut Tim Peake unveiled the name at the Airbus factory in Stevenage where the robot is being put together.
The six-wheeled vehicle will be equipped with instruments and a drill to search for evidence of past or present life on the Red Planet.
