The surface of the red planet may be a desolate land with little geological activity now, but it is filled with fascinating bumps and scratches from frozen poles to deep basins, all hinting at a geologically active past.
Now a team at Nasa has released more than 600 images of Mars, showing a range of gullies, dunes, craters, geological layering and other features.
Each feature teaches us something new about the history of our mysterious neighbour, which used to be covered with oceans, ice sheets and erupting volcanoes.
The Mars Reconnaissance Orbiter has been circling the red planet, capturing pictures using its High Resolution Imaging Science Experiment (HiRISE) camera, since 2006. Now the team behind the orbiter has published hundreds of new images. Hyblaeus Dorsa, one of the ridges on the planet, is shown
The Mars Reconnaissance Orbiter has been circling the red…