Software upgrade for 19-year-old martian water-spotter
The MARSIS instrument on ESA’s Mars Express spacecraft, famous for its role in the discovery of signs of liquid water on the Red Planet, is receiving a major software upgrade that will allow it to see beneath the surfaces of Mars and its moon Phobos in more detail than ever before.
Mars Express was ESA’s first mission to the Red Planet. Launched 19 years ago, on 2 June 2003, the orbiter has spent almost two decades studying Earth’s neighbour and revolutionising our understanding of the history, present and future of Mars.
The Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) instrument on Mars Express was crucial in the search for and discovery of signs of liquid water on Mars, including a suspected 20-by-30 km lake of salty water buried under 1.5 km of ice in the southern polar region.
Operated by the Istituto Nazionale di Astrofisica (INAF), Italy, and fully funded by the Italian Space Agency (ASI), MARSIS sends low-frequency radio waves down towards the planet using its 40-metre long antenna.
