InSight mission was launched on May 5, 2018 and now spacecraft passed more than half the way to Mars. On November 26 it will land to the Martian Elysium Planitia. In case of mission success, this will be the first research of red planet in-depth as all of previous attempts were failed.
InSight carries three instruments on board: HP3 (Heat-Flow and Physical Properties Probe) for in-depth temperature measurements, RISE (Rotation and Interior Structure Experiment) for a precise determination of Mars rotation parameters, and SEIS (Seismic Experiment for Interior Structure) — the most sensitive seismometer ever used in space.
NASA reports, that using the CRISM spectrometer of the Mars Reconnaissance Orbiter (MRO) was determined that the dark stripes on Mars surface is the trails of the liquid water.
These dark stripes were first discovered five years ago, in 2010. But only now they were truly researched.
During all the time of Mars exploration we already have a lots of circumstantial evidence of liquid water presence. But this evidence is much more serious.
Researchers thinks that in the warm season on Mars, when temperature raises up to 20° C on the planet’s surface flows streams of salt water. Water then evaporates and left these dark stripes.