This animation from European Space Agency shows the view of the arrival of ESA's ExoMars Trace Gas Orbiter (TGO) and the Schiaparelli Entry, descent and landing Demonstrator Module as seen from ESA's Mars Express on 19 October 2016.
More specifically, it shows the field of view as ‘seen’ by the Melacom radio receiver on Mars Express, which will be receiving signals from Schiaparelli beginning at 13:22 GMT (15:22 CEST) and ending at 15:08 GMT (17:08 CEST). The record of these signals from Schiaparelli will provide a critical indication of the module’s descent progress, trajectory and landing.At the start of the animation, TGO and Schiaparelli are shown already separated, which is set to occur at 14:42 GMT (16:42 CEST) on 16 October.
The animation covers the time period between approximately 13:35 GMT (15:35 CEST) and 15:27 GMT (17:27 CEST) on 19 October, including the expected time of Schiaparelli touch down at 14:47 GMT (16:47 CEST).
At the end of the animation, Melacom has stopped recording signals from Schiaparelli and the view rotates as Mars Express slews into an Earth-pointing orientation to transmit the recorded signals to mission controllers at ESA’s ESOC operations centre in Darmstadt, Germany.
Sculpted by ancient water flowing on the surface, Mawrth Vallis is one of the most remarkable outflow channels on Mars. The valley, once a potentially habitable place, is one of the main features of a region at the boundary between the southern highlands and the northern lowlands.
Mawrth Vallis takes centre stage in this image, a bird’s eye view of a 330 000 sq km area surrounding the valley. With a length of 600 km and a depth of up to 2 km, it is one of the biggest valleys on Mars. Huge amounts of water once passed through it, from a higher elevation region, part of which is shown in the lower right of the image, into the northern plains, in the top left.
Among the remarkable features are the large exposures of light-toned phyllosilicates (weathered clay minerals) that lie along its course. Phyllosilicates on Mars are evidence of the past presence of liquid water and point to the possibility that habitable environments could have existed on the planet up until 3.6 billion years ago.
A dark cap rock, remains of ancient volcanic ash, covers many of the clays and could have protected traces of ancient microbes in the rocks from radiation and erosion. This makes Mawrth Vallis one of the most interesting regions for geologists and astrobiologists alike. It is one of the candidate landing sites for ExoMars 2020, a joint mission between ESA and Russia, with the primary goal of finding out if life once existed on Mars.
The name comes from the Welsh word for Mars (“Mawrth”) and the Latin for valley (“Vallis”). This mosaic was created using nine individual images taken by the high-resolution stereo camera on ESA’s Mars Express spacecraft, which has been orbiting Mars since late 2003. It is one of a set of images of this region previously published on 7 July 2016 on the DLR website and the homepage of the Freie Universität Berlin.