- A Mars orbiter launched in 2016 has spotted water in Mars’ canyon system called the Valles Marineris. The canyon system is the largest in the Solar System and is about ten times longer and five times deeper than Earth’s Grand Canyon.
- The RoscosmosExoMars Trace Gas Orbiter is a joint mission of the European Space Agency and the Russian Roscosmos agency.
- The water was spotted using the Trace Gas Orbiter (TGO)’s Fine Resolution Epithermal Neutron Detector (FREND) instrument, which helps map hydrogen on the surface of the red planet.
