Kevin Fong concludes his grand tour of the planet Mars, in search of water. Some of the most spectacular Martian landscapes were carved by vast and violent quantities of water in the planet’s past. The Tolkienesque terrain of Iani Chaos is one such place as is the great canyon Ares Valles.

Kevin also talks to scientists on the current Curiosity Mars rover mission about water in the deep history of Gale Crater and its central mountain Mount Sharp. The journey concludes with gullies on cliffs and craters, suggesting that water still gushes on the surface of Mars today. Could this mean that life exists on the Red Planet today?

(Image: Mars Express spacecraft in orbit around Mars