Water on Mars any point in the year but would be ideal for solid carbon dioxide. The carbon dioxide melting in the warmer summer would yield liquid carbon dioxide which would then form the gullies. Even if gullies are carved by flowing water at the surface, the exact source of the water and the mechanisms behind its motion are not understood. The dry gullies are deep grooves etched into the slopes that are there year-round. There are many other features on Mars, and some of them change seasonally. In August 2011, NASA announced the discovery by undergraduate student Lujendra Ojha of current seasonal
Exploration of Mars surface of Mars. In August 2012, NASA selected "InSight", a $425 million lander mission with a heat flow probe and seismometer, to determine the deep interior structure of Mars. Two flyby CubeSats called MarCO were launched with "InSight" on 5 May 2018 to provide real-time telemetry during the entry and landing of "InSight". The CubeSats separated from the Atlas V booster 1.5 hours after launch and traveled their own trajectories to Mars. "InSight" landed successfully on Mars on 26 November 2018. Other future mission concepts include polar probes, Martian aircraft and a network of small meteorological stations. Longterm areas of