English: This space radar image shows the Roter Kamm impact crater in southwestern Namibia in southern Africa.The crater rim is seen in the upper center of the image as a radar-bright, circular feature. Geologists believe the crater was formed by a meteorite that collided with Earth approximately 5 million years ago. The data were acquired by the Spaceborne Imaging Radar- C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) instrument onboard space shuttle Endeavour on April 14, 1994. The colors in this image were obtained using the following radar channels: red represents the L-band (horizontally transmitted and received); green represents the L-band (horizontally transmitted and vertically received); and blue represents the C-band (horizontally transmitted and vertically received). The area shown is approximately 25.5 kilometers (15.8 miles) by 36.4 kilometers (22.5 miles), with north toward the upper left. The bright white irregular feature in the upper right corner is a small hill of exposed rock outcrop. Roter Kamm is a moderate sized impact crater, 2.5 kilometers (1.5 miles) in diameter rim to rim, and is 130 meters (400 feet) deep. However, its original floor is covered by sand deposits at least 100 meters (300 feet) thick. In a conventional aerial photograph, the brightly colored surfaces immediately surrounding the crater cannot be seen because they are covered by sand. The faint blue surfaces adjacent to the rim may indicate the presence of a layer of rocks ejected from the crater during the impact. The darkest areas are thick windblown sand deposits which form dunes and sand sheets. The sand surface is smooth relative to the surrounding granite and limestone rock outcrops and appears dark in radar image. The green tones are related primarily to larger vegetation growing on sand soil, and the reddish tones are associated with thinly mantled limestone outcrops. Studies of impact craters on the surface of the Earth help geologists understand the role of the impact process in the Earth's evolution, including effects on the atmosphere and on biological evolution. Spaceborne Imaging Radar-C and X- Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: L-band (24 cm), C-band (6 cm) and X-band (3 cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI). Afrikaans: 'n Ruimteradarbeeld van die omgewing van die Roter Kamm-impakkrater in die Diamantspergebied van die Karas-streek van suid-Namibië.Die kraterrand is sigbaar as 'n radarhelder, ringvormige struktuur. Volgens geoloë is dit gevorm deur 'n meteorietimpak sowat 5 miljoen jaar gelede. Die data is verkry deur die Ruimtelike radaraftasting C/X-band sintetiese apertuur radarinstrument (SIR-C/X-SAR) vanuit die Endeavour-pendeltuig op 4 April 1994. Die beeldkleure is toegeken aan die volgende radarkanale: rooi verteenwoordig die L-band (horisontaal versend en ontvang); groen die L-band (horisontaal versend en vertikaal ontvang); en blou die C-band (horisontaal versend en vertikaal ontvang). Die afgebeelde area is sowat 25.5km by 36.4km, met noord na bo, links. Die helderwit onreëlmatige voorwerp regs bo, is 'n klein ontblote heuwelkruin. Roter Kamm is 'n middelgrootte trefkrater, 2.5km in deursnit (randkruin tot randkruin) en is 130m diep. Die oorspronklike vloer is egter bedek met sandneerslae minstens 100m dik. In konvensionele lugfotos is die helderkleurige oppervlaktes onmiddellik buite die krater onsigbaar, aangesien dit deur sand bedek is. Die ylblou oppervlaktes aanliggend aan die kraterrand mag op 'n rotsneerslag dui wat tydens die trefslag uitgewerp is. Die donkerste areas is dik windverstrooide sandneerslae wat duine en sandvlaktes vorm. Die sandoppervlakte is egaal vergeleke met die omliggende graniet- en kalksteen-rotskruine en lyk swart op die radarbeeld. Die groen tinte is hoofsaaklik aan groter plante op sandgrond toe te skryf, en die rooi tinte word verbind met die dun mantels van kalksteen-rotskruine. Studies van trefkraters verbeter geoloë se begrip van die rol van impakprosesse in die aarde se ontwikkeling, insluitend effekte op die atmosfeer en biologiese ontwikkeling. Die betrokke ruimte-instrument (SIR-C/X-SAR) is deel van NASA se Missie na Planeet Aarde. Die radars verlig die aarde met mikrogolwe wat gedetaileerde waarnemings lewer, ongeag die tyd, weer of sonlig tydens die aftasting. SIR-C/X-SAR gebruik drie mikrogolf-golflengtes: L-band (24cm), C-band (6cm) en X-band (3cm). Die multi-frekwensiedata sal deur die internasionale wetenskapgemeenskap gebruik word om die globale omgewing en veranderings daarvan beter te verstaan. Die SIR-C/X-SAR data, aangevul deur vliegtuig- en grondstudies, sal wetenskaplikes insigte bied ter onderskeiding van omgewingsfaktore wat natuurlike oorsake het, teenoor dié wat deur mense veroorsaak word. SIR-C is ontwikkel deur NASA se Jet Propulsion-laboratorium. X-SAR is ontwikkel deur die Dornier en Alenia Spazio maatskappye vir die Duitse ruimteagentskap, Deutsche Agentur für Raumfahrtangelegenheiten (DARA), en die Italiaanse ruimteagentskap, Agenzia Spaziale Italiana (ASI). Deutsch: Der Rote Kamm, ein Einschlagkrater mittlerer Größe, in der Namib-Wüste im Süden Namibias innerhalb des Diamantensperrgebiets, in der Region Karas