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'Happy face' crater on Mars   This image, obtained by the HRSC on ESA's Mars Express, is a mosaic of overlapping images gathered during five separate orbits. The ground resolution ranges between 10-20 metres per pixel, depending on location within the image strip, and the crater is shown lying near 51° South and 329°East. North is up. The image shows Crater Galle containing a large stack of layered sediments forming an outcrop in the southern part of the crater. Several parallel gullies, possible evidence for liquid water on the Martian surface, originate at the inner crater walls of the southern rim.  Map indicating the location of these images of the 230-kilometre diameter Crater Galle in relation to surrounding features. Crater Galle lies near 51° South and 329° East.  This perspective view of Crater Galle was obtained by the HRSC on ESA's Mars Express and has a ground resolution ranging from 10-20 metres per pixel. The image shows several parallel gullies, possible evidence for liquid water on the Martian surface, which originate at the inner crater walls of the southern rim.  This false-colour mosaic of Crater Galle was derived from three HRSC colour and nadir channels gathered during five overlapping orbits. The crater's interior displays a surface shaped by aeolian (wind-caused) activity as seen in numerous dunes and dark dust devil tracks which removed the bright dusty surface coating.  This black and white high-resolution image mosaic of Crater Galle on Mars. The images show Crater Galle lying to the east of the Argyre Planitia impact basin and south west of the Wirtz and Helmholtz craters, at 51° South and 329° East.  Perspective view of Crater Galle looking north. This image was obtained by the HRSC on ESA's Mars Express and has a ground resolution ranging from 10-20 metres per pixel.  Close-up view of Crater Galle, lying to the east of the Argyre Planitia impact basin and south-west of the Wirtz and Helmholtz craters, at 51° South latitude and 329° East longitude. The image clearly shows a large stack of layered sediments forming an outcrop in the southern part of the crater. Several parallel gullies, possible evidence for liquid water on the Martian surface, originate at the inner crater walls of the southern rim.  This false-colour mosaic of Crater Galle was derived from three HRSC colour and nadir channels gathered during five overlapping orbits. It shows Crater Galle lying at 51° South and 329° East. Release date: 20 April 2006 |